|  Max
                  Planck and quanta
  Albert
                  Einstein's E=mc2
  Friedrich
                  Nietzsche's "slave morality"
  Henri
                  Bergson's "life force"
  Sigmund
                  Freud and psychoanalysis
  the
                  ego, the id, and the superego
  Social
                  Darwinism and Herbert Spencer
  Ernst
                  Renan's Life of Jesus
  Pius
                  IX's Syllabus of Errors
 |  Leo
                  XIII's De Rerum Novarum
  Impressionism
  Post-Impressionism
  Paul
                  Cezanne and Vincent van Gogh
  Pablo Picasso and Cubism
  Abstract
                  Expressionism
 |  Igor
                  Stravinsky's The Rite of Spring
  the
                  Pankhursts and the "suffragettes"
  the
                  "new woman"
  Alfred
                  Dreyfus
  Theodore
                  Herzl and Zionism
  Fabian
                  Socialists
  David
                  Lloyd George
  "Bloody
                  Sunday"
  Peter
                  Stolypin
   |