But don't despise error. When touched by genius, when led by chance, the most superior truth can come into being from even the most foolish error. The important inventions which have been brought about in every realm of science from false hypotheses number in the hundreds, indeed in the thousands.

But nothing is better than a truth which appears not to have the semblance of truth. There is always something incomprehensible about the great heroic deeds performed by humanity because they rise so far beyond the mediocre measure of mere mortals; but it is always only because of the incredible feats that human beings have accomplished that humanity recovers its faith in itself.

In 1938, after Austria, our universe had become accustomed to inhumanity, to lawlessness, and brutality as never in centuries before. In a former day the occurrences in unhappy Vienna alone would have been sufficient to cause international proscription, but in 1938 the world conscience was silent or merely muttered surlily before it forgot and forgave.

Immanuel Kant lived with knowledge as with his lawfully wedded wife, slept with it in the same intellectual bed for forty years and begot an entire German race of philosophical systems.

No guilt is forgotten so long as the conscience still knows of it.

Fate forces its way to the powerful and violent. With subservient obedience it will assume for years dependency on one individual:Caesar, Alexander, Napoleon, because it loves the elemental human being who grows to resemble it, the intangible element. Sometimes, and these are the most astonishing moments in world history, the thread of fate falls into the hands of a complete nobody but only for a twitching minute.

Health alone does not suffice. To be happy, to become creative, man must always be strengthened by faith in the meaning of his own existence.