"The Hour of Decision", published in 1934, was a bestseller, but the National Socialist German Workers Party later banned it for its critiques of National Socialism. Spengler's criticisms of liberalism were welcomed by the Nazis, but Spengler disagreed with their biological ideology and anti-Semitism. While racial mysticism played a key role in his own worldview, Spengler had always been an outspoken critic of the pseudo-scientific racial theories professed by the Nazis and many others in his time, and was not inclined to change his views upon Hitler's rise to power. Although himself a German nationalist, Spengler viewed the Nazis as too narrowly German, and not occidental enough to lead the fight against other peoples. The book also warned of a coming world war in which Western Civilization risked being destroyed, and was widely distributed abroad before eventually being banned in Germany. A "Time" review of "The Hour of Decision" noted his international popularity as a polemicist, observing that "When Oswald Spengler speaks, many a Western Worldling stops to listen". The review recommended the book for "readers who enjoy vigorous writing", who "will be glad to be rubbed the wrong way by Spengler's harsh aphorisms" and his pessimistic predictions.