That life is worth living is the most necessary of assumptions, and were it not assumed, the most impossible of conclusions.

To know what people really think, pay regard to what they do, rather than what they say.

A conception not reducible to the small change of daily experience is like a currency not exchangeable for articles of consumption; it is not a symbol, but a fraud.

One's friends are that part of the human race with which one can be human.

Saints cannot arise where there have been no warriors, nor philosophers where a prying beast does not remain hidden in the depths.

Friends need not agree in everything or go always together, or have no comparable other friendships of the same intimacy.

He thinks he believes only what he sees, but he is much better at believing than at seeing.