Knowledge is dead; the school, however, serves the living.

The most important human endeavor is the striving for morality in our actions. Our inner balance and even our very existence depend on it. Only morality in our actions can give beauty and dignity to life.

We have penetrated far less deeply into the regularities obtaining within the realm of living things, but deeply enough nevertheless to sense at least the rule of fixed necessity... what is still lacking here is a grasp of the connections of profound generality, but not a knowledge of order itself.

The difference between what the most and the least learned people know is inexpressibly trivial in relation to that which is unknown.

Everything you can imagine, nature has already created.

An evening everyone agrees, is a lost evening.

To understand the world one must not be worrying about one's self.