He who is silent is forgotten; he who does not advance falls back; he who stops is overwhelmed; out distanced, crushed; he who ceases t grow becomes smaller; he who leaves off, gives up; the condition of standing still is the beginning of the end.

What we call little things are merely the causes of great things; they are the beginning, the embryo, and it is the point of departure which, generally speaking, decides the whole future of an existence. One single black speck may be the beginning of gangrene, of a storm, of a revolution.

Knowledge, love, power-there is the complete life.

Nothing is more characteristic of a man than the manner in which he behaves toward fools.

Cleverness is serviceable for everything, sufficient for nothing.

A man must be able to cut a knot, for everything cannot be untied; he must know how to disengage what is essential from the detail in which it is enwrapped, for everything cannot be equally considered; in a word, he must be able to simplify his duties, his business and his life.

The laws of animality govern almost the whole of history.