1900-1940 a timeline of natural light, the hidden light, and the ever-present darkness in the Western World

1900 Sigmund Freud’s The Interpretation of Dreams.

1901: Gustav Mahler's Fourth Symphony, his most popular, debuts in Munich. William James gives his Gifford Lectures on Natural Religion in Edinburgh.

1902 : Claude Debussy introduces impressionism to music in Pelléas and Mélisande at the Opéra Comique in Paris. Willaim James publishes his Gifford lectures, the book is The Varieties of Religious Experience.

1903 Oliver and Wilbur Wright have the first successful airplane flight. Jack London publishes The Call of the Wild. The Kishinev pogrom: 49 Jews murdered. The first publication of The Protocols of the Elders of Zion hoax in St. Petersburg, Russia (by Pavel Krushevan). George Bernard Shaw’s Man and Superman.

1904 In February Aleister Crowley and Rose Edith Kelly arrived in Cario. In a burst of inspiration Crowley transcribes his book Liber Al vel Legis, sub figura CCXX, The Book of the Law. The London Symphony Orchestra is established. The English translation of Maimonides's The Guide for the Perplexed, by M. Friedländer, was republished in a less expensive one volume edition, without footnotes, with revisions. The second edition is still in use today (2016), sold through Dover Publications.

1905 The Russian Revolution begins. Albert Einstein publishes his Theory of Special Relativity. Pogrom in Dnipropetrovsk. Sigmund Freud’s Three Essays on the Theory of Sexuality. Max Weber’s The Protestant Ethic and the Spirit of Capitalism.

1906 Alfred Dreyfus was exonerated and reinstated as a major in the French Army. William James give a series of lectures at the Lowell Institute of Columbia University in Boston, November - January of 1907.

1907: Crowley claimed to have been contacted once again by Aiwass in late October and November adding that Aiwass dictated two further texts to him, "Liber VII" and "Liber Cordis Cincti Serpente", both of which were later classified in the corpus of Holy Books of Thelema. Crowley wrote down more Thelemic Holy Books during the last two months of the year, including "Liber LXVI", "Liber Arcanorum", "Liber Porta Lucis, Sub Figura X", "Liber Tau", "Liber Trigrammaton" and "Liber DCCCXIII vel Ararita". William James publishes his Lowell Institute lectures in a book, Pragmatism: A New Name for Some Old Ways of Thinking. William James gives the Hibbert Lectures at Manchester College on the present situation in philosophy. D. T. Suzuki’s Outline of Mahayana Buddhism, introduces Buddhism to a Western Audience.

1909 Aleister Crowley’s composes Liber 777. Arthur Edward Waite and Pamela Colman Smith publish their Tarot deck with the William Rider and Son of London publishing company. The National Association for the Advancement of Colored People founded in the United States. Salomon Reinach and Florence Simmonds refer to "this new antisemitism, masquerading as patriotism, which was first propagated at Berlin by the court chaplain Stöcker, with the connivance of Bismarck." Similarly, Peter N. Stearns comments that "the ideology behind the new anti-Semitism [in Germany] was more racist than religious.". William James publishes The Meaning of Truth: A Sequel to ‘Pragmatism’. he publishes his Hibbert lectures as A Pluralistic Universe.

1910 Arthur Edward Waite’s book The Pictorial Key to the Tarot published using the drawings of his collaborator Pamela Coleman Smith. Igor Stravinsky completes The Firebird for Sergei Diaghilev's Ballets Russes. William James dies. Bertrand Russell and Alfred North Whitehead’s Principia Mathematica first parts published, finish in 1913.

1911: RichardStrauss's Der Rosenkavalier premieres in Dresden. The Blood libel trial of Menahem Mendel Beilis in Kiev.

1912 Aleister Crowley begins his first set of commentaries to his Book of Law. The HMS Titanic sinks. Essays in Radical Empiricism by William James is posthumously published out of a collection of separately published essays as per his plans before his death. Carl Jung’s Psychology of the Unconscious.

1913 Aleister Crowley translated and published Eliphas Levi’s The Key to the Great Mysteries in Equinox volume Ten in the fall. Billboard magazine, in the U.S., publishes a list of the most popular vaudeville songs. Igor Stravinsky’s Rite of Spring. D. H. Lawrence’s Sons and Lovers. Henry Ford begins mass production of automobiles.

1914 The Archduke of Austria assassinated in Serbia and is the spark that sets off World War I. James Joyce’s Portrait of the Artist as a Young Man. Franz Kafka’s The Trail

1915 Albert Einstein publishes The Theory of General Relativity. The World War I prompts expulsion of 250,000 Jews from Western Russia. The Leo Frank trial and lynching in Atlanta, Georgia turns the spotlight on antisemitism in the United States and leads to the founding of the Anti-Defamation League.

1916: Charles Ives finishes his Fourth Symphony.

1917–1921: Attacked for being revolutionaries or counter-revolutionaries, unpatriotic pacifists or warmongers, religious zealots or godless atheists, capitalist exploiters or bourgeois profiteers, masses of Jewish civilians (by various estimates 70,000 to 250,000, the number of orphans exceeded 300,000) were murdered in pogroms in the course of Russian Civil War. Rudolf Otto’s The Idea of the Holy.

1918 Oswald Spengler’s The Decline of the West.

1919 World War I ends and the formation of the League of Nations. After moving from its southern rural roots, jazz establishes Chicago as its capital. The city will become home to such jazz greats as trumpeter Louis Armstrong and pianist Jelly Roll Morton. In February a brigade of UNR troops killed 1500 Jews in Proskurov. In Tetiev on March 25, 1919, Cossack troops under the command of Colonels Cherkovsky, Kurovsky and Shliatoshenko murdered 4000 Jews.

1919-1920: During the Russian Civil War the Jews of Uman in eastern Podolia were subjected to two pogroms in 1919, as the town changed hands several times. The first pogrom, in spring, claimed 170 victims; the second one, in summer, more than 90. This time the Christian inhabitants helped to hide the Jews. The Council for Public Peace, with a Christian majority and a Jewish minority, saved the city from danger several times. In 1920, for example, it stopped the pogrom initiated by the troops of General Denikin. Soviet Yevsektsiya (the Jewish section of the Communist Party) attacks Bund and Zionist parties for "Jewish cultural particularism". In April 1920, the All-Russian Zionist Congress is broken up by Cheka led by Bolsheviks, whose leadership and ranks included many anti-Jewish Jews. Thousands are arrested and sent to Gulag for "counter-revolutionary... collusion in the interests of Anglo-French bourgeoisie... to restore the Palestine state." Hebrew language is banned, Judaism is suppressed, along with other religions.

1920 Paul Foster Case’s An Introduction to the Study of the Tarot.The Jerusalem pogrom of April 1920 of old Yishuv. The idea that the Bolshevik revolution was a Jewish conspiracy for the world domination sparks worldwide interest in The Protocols of the Elders of Zion. In a single year, five editions are sold out in England alone. In the US Henry Ford prints 500,000 copies. In Spring 1920, Henry Ford made his personal newspaper, The Dearborn Independent, chronicle what he considered the "Jewish menace". Every week for 91 issues, the paper exposed some sort of Jewish-inspired evil major story in a headline. The most popular and aggressive stories were then chosen to be reprinted into four volumes called The International Jew. William Butler Yeat’s “The Second Coming”. Freud’s Beyond the Pleasure Principle.

1921 Crowley completes his commentary on his Book of Law. May 1–4: Jaffa riots in Palestine. Throughout 1921–1925:Outbreak of antisemitism in United States, led by Ku Klux Klan. Bertrand Russell’s The Analysis of Mind. Ludwig Wittgenstein’s Tractaus Logico-Philosphicus.

1922 T. S. Eliot’s The Waste Land. James Joyce’s Ulysses. Max Weber’s Economy and Society.

1923 Charles Stansfeld Jones aka Frater Achad’s Q.B.L. or The Bride’s Reception. “Queen of the Blues” Bessie Smith records her first song, “Down Hearted Blues.” Der Stürmer (pronounced [deːɐ̯ ˈʃtʏʁmɐ], lit. "the Attacker") was a weekly tabloid-format Nazi newspaper published by Julius Streicher (a prominent official in the Nazi Party) from 1923 to the end of World War II, with brief suspensions in publication due to legal difficulties. It was a significant part of Nazi propaganda and was vehemently anti-Semitic. Freud’s The Ego and the Id. Martin Buber’s I and Thou. Ivan Pavlov’s Conditional Reflexes.

1924 Arthur Edward Waite’s The Holy Kabbalah. The Juilliard School opens in New York. Maurice Ravel's Bolero opens in Paris. George Gershwin's Rhapsody in Blue premieres in New York. In the U.S. The National Origins Quota of 1924 and Immigration Act of 1924 largely halted immigration to the U.S. from Eastern Europe and Russia; many later saw these governmental policies as having antisemitic undertones, as a great many of these immigrants coming from Russia and Eastern Europe were Jews (the "outbreak of antisemitism" mentioned in the above entry may have also played a part in the passage of these acts). Jean Piaget’s Judgement and Reasoning in the Child. Otto Rank’s The Trauma of Birth.

1925: The Ku Klux Klan In Prophecy is a 144-page book written by Bishop Alma Bridwell White in 1925 and illustrated by Reverend Branford Clarke. This book primarily espouses White's deep fear and hatred of the Roman Catholic Church while also promoting antisemitism, racism against African Americans, white supremacy, and women's equality. Adolf Hitler publishes Mein Kampf. Whitehead’s Science and the Modern World.

1926 Erwin Schrodinger develops wave equation underlying quantum mechanics.

1927 Paul Foster Case published A Brief Analysis of the Tarot. The Schwartzbard trial was a sensational 1927 French murder trial that resulted in a mistrial of international proportions. At the trial Sholom Schwartzbard was accused of murdering the Ukrainian immigrant and head of the Ukrainian government-in-exile Symon Petlura in Paris. While the defendant fully admitted to the crime the trial at the end turned in accusation of Petlura's responsibility for the massive 1919–1920 pogroms in Ukraine in which Schwartzbard had lost all 15 members of his family. Instead of Schwartzbard's murder case the trial was turned into a political case against the Ukrainian government. Schwartzbard was acquitted. Werner Heisenberg formulates principle of uncertainty. Niels Bohr formulates principle of complementarity. Martin Heidegger’s Being and Time. Herman Hesse’s Der Steppenwolf.

1928: Yeat’s The Tower. Rudolf Carnap’s The Logical Structure of the World. Jung’s The Spiritual Problem of Modern Man.

1929 August 23: The ancient Jewish community of Hebron is destroyed in the Hebron massacre. Whitehead’s Process and Reality. Virginia Woolf’s A Room of One’s Own. William Faulkner’s The Sound and the Fury. Vienna Circle of logical empiricism manifesto: Scientific Conception of the World.

1930: Freud’s Civilization and It’s Discontents. Ortega y Gasset’s The Revolt of the Masses. Rudolf Bultmann’s The Historicity of Man and Faith.

1931 Paul Foster Case published Highlights of Tarot. Kurt Godel’s Theorem proves undecidability of propositions in formalized mathematical systems. Ernst Cassirer’s Philosophy of Symbolic Forms.

1932 Israel Regardie’s A Garden of Pomegranates and The Tree of Life: A Study in Magic. Jazz composer Duke Ellington writes “It Don't Mean a Thing, If It Ain't Got That Swing.” Carl Jasper’s Philosophy.

1933: Laurens Hammond introduces his Hammond organ. In a series of lectures delivered at the University of Virginia in 1933, published under the title After Strange Gods: A Primer of Modern Heresy (1934), T.S. Eliot wrote of societal tradition and coherence, "What is still more important [than cultural homogeneity] is unity of religious background, and reasons of race and religion combine to make any large number of free-thinking Jews undesirable." Eliot never re-published this book/lecture. In Germany Jews are stripped of their rights not only as citizens: Law against Overcrowding of German Schools and Universities. Law for the Reestablishment of the Professional Civil Service (ban on professions). The Reich Flight Tax is used to expropriate funds from Jewish emigres.

1934: In his pageant play The Rock, T.S. Eliot distances himself from Fascist movements of the thirties by caricaturing Oswald Mosley's Blackshirts, who 'firmly refuse/ To descend to palaver with anthropoid Jews'. The "new evangels"of totalitarianism are presented as antithetic to the spirit of Christianity. 2,000 of Afghani Jews expelled from their towns and forced to live in the wilderness. The first appearance of The Franklin Prophecy on the pages of William Dudley Pelley's pro-Nazi weekly magazine Liberation. According to the US Congress report: "The Franklin "Prophecy" is a classic anti-Semitic canard that falsely claims that American statesman Benjamin Franklin made anti-Jewish statements during the Constitutional Convention of 1787. It has found widening acceptance in Muslim and Arab media, where it has been used to criticize Israel and Jews..." Arnold Toynbee’s A Study of History. Carl Popper’s Logic of Scientific Discovery. Jung’s Archetypes of the Collective Unconscious. Lewis Mumford’s Technics and Civilization.

1935 Dion Fortune’s The Mystical Qabalah.. Nuremberg Laws introduced. Jewish rights rescinded. The Reich Citizenship Law strips them of citizenship. The Law for the Protection of German Blood and German Honor: Marriages between Jews and citizens of German or kindred blood are forbidden. Sexual relations outside marriage between Jews and nationals of German or kindred blood are forbidden. Jews will not be permitted to employ female citizens of German or kindred blood as domestic servants. Jews are forbidden to display the Reich and national flag or the national colors. On the other hand they are permitted to display the Jewish colors.

1936 Electric guitars debut. Lovejoy’s Great Chain of Being. Ayer’s Language, Truth and Logic. Keynes’s General Theory of Employment, Interest, and Money.

1937: The Glenn Miller Band debuts in New York. "The Eternal Jew" was the title of an exhibition of degenerate art (entartete Kunst) displayed at the Library of the German Museum in Munich from 8 November 1937 to 31 January 1938. The exhibition attracted 412,300 visitors, over 5,000 per day. Anna Freud’s The Ego and the Mechanism of Defense. Turing’s On Computable Numbers.

1938: Anschluss, pogroms in Vienna, anti-Jewish legislation, deportations to Nazi concentration camps. Decree authorizing local authorities to bar Jews from the streets on certain days. Decree empowering the justice Ministry to void wills offending the "sound judgment of the people". Decree providing for compulsory sale of Jewish real estate. Decree providing for liquidation of Jewish real estate agencies, brokerage agencies, and marriage agencies catering to non-Jews. Directive providing for concentration of Jews in houses. Father Charles E. Coughlin, Roman Catholic priest, starts anti-Semitic weekly radio broadcasts in the United States. Jean Paul Sartre’s Nausea. Bertolt Brecht’s Galileo. November 9–10:Kristallnacht (Night of The Broken Glass). In one night most German synagogues and hundreds of Jewish-owned German businesses are destroyed. Almost 100 Jews are killed, and 10,000 are sent to concentration camps. July 6–15: Evian Conference: 31 countries refuse to accept Jews trying to escape Nazi Germany (with exception of Dominican Republic). Most find temporary refuge in Poland. See also Bermuda Conference November 17: Racial legislation introduced in Italy. Anti Jewish economic legislation in Hungary. Aleister Crowley begins work on his own Tarot deck.

1941 Rhinehold Niebuhr’s The Nature and Destiny of Man. Erich Fromm’s Escape From Freedom. Jorge Luis Borges’s Ficciones.

1942 Albert Camus’s The Stranger and The Myth of Sisyphus.

1943: Crowley completed his Tarot deck. Sarte’s Being and Nothingness. Elliot’s Four Quartets.

1944: Crowley’s Tarot deck was published in private circulation as The Book of Thoth. Gershom Gehard Scholem publishes Major Trends in Jewish Mysticism, which transforms and begins the modern study of and appreciation of Jewish Mysticism, from the Chariot riders and the Heavenly palaces, to the creation of the passing on of tradition that was given the name of Kabbalah.

And so it goes…