Everything is hard before it is easy.

The artist alone sees spirits. But after he has told of their appearing to him, everybody sees them.

There are two things children should get from their parents: roots and wings.

The best benefit we derive from history is the enthusiasm it excites.

Progress has not followed a straight ascending line, but a spiral with rhythms of progress and retrogression, of evolution and dissolution.

Writing is busy idleness.

Mathematics can remove no prejudices and soften no obduracy. It has no influence in sweetening the bitter strife of parties, and in the moral world generally its action is perfectly null.