Knowledge exists in two forms - lifeless, stored in books, and alive, in the consciousness of men. The second form of existence is after all the essential one; the first, indispensable as it may be, occupies only an inferior position.

When the number of factors coming into play in a phenomenological complex is too large scientific method in most cases fails. One need only think of the weather, in which case the prediction even for a few days ahead is impossible. Nevertheless, no one doubts that we are confronted with a causal connection whose causal components are in the main known to us. Occurrences in this domain are beyond the reach of exact prediction because of the variety of factors in operation, not because of any lack of order in nature.

One does not make wars less likely by formulationg rules of warfare... war cannot be humanized. It can only be eliminated.

Germany had the misfortune of becoming poisoned, first because of plenty, and then because of want.

... one does people the best service by giving them some elevating work to do and thus indirectly elevating them.

Great spirits have always encountered violent opposition from mediocre minds.

A thought that sometimes makes me hazy: Am I - or are the others crazy?