I maintain that many an inventor, many a diplomat, many a financier is a sounder philosopher than all those who practice the dull craft of experimental psychology.

Here too he developed his affinity for the arts—especially poetry drama and music—and came under the influence of the ideas of Goethe and Nietzsche. In 1920 Spengler produced Prussiandom and Socialism (Preußentum und Sozialismus) which argued for an organic nationalist version of socialism and authoritarianism. He is best known for his book The Decline of the West (Der Untergang des Abendlandes) publiOswald Spenglerd in 1918 and 1922 covering all of world history.

In 1920 Spengler produced Prussiandom and Socialism (Preußentum und Sozialismus) which argued for an organic nationalist version of socialism and authoritarianism. He proposed a new theory according to which the lifespan of civilizations is limited and ultimately they decay. He is best known for his book The Decline of the West (Der Untergang des Abendlandes) publiOswald Spenglerd in 1918 and 1922 covering all of world history.