The hour-hand of life.

Only the most acute and active animals are capable of boredom.

Science and art have that in common that everyday things seem to them new and attractive.

Probability but no truth, facility but no freedom--it is owing to these two fruits that the tree of knowledge cannot be confused with the tree of life.

The most dangerous follower is the one whose defection would destroy the whole party: hence, the best follower.

Like tourists huffing and puffing to reach the peak we forget the view on the way up.

There are men who desire power simply for the sake of the happiness it will bring; these belong chiefly to political parties.