A human being should beware how he laughs, for then he shows all his faults.

For it is only the finite that has wrought and suffered; the infinite lies stretched in smiling repose.

A cultivated man, wise to know and bold to perform, is the end to which nature works.

How we hate this solemn Ego that accompanies the learned, like a double, wherever he goes.

When a man thinks happily, he finds no foot-track in the field he traverses. All spontaneous thought is irrespective of all else.

There are people who have an appetite for grief; pleasure is not strong enough and they crave pain. They have mithridatic stomachs which must be fed on poisoned bread, natures so doomed that no prosperity can sooth their ragged and dishevelled desolation.

Vigor is contagious, and whatever makes us either think or feel strongly adds to our power and enlarges our field of action.