But what minutes! Count them by sensation, and not by calendars, and each moment is a day.

The fool wonders, the wise man asks.

Desperation is sometimes as powerful an inspirer as genius.

It is the fashion to style the present moment an extraordinary crisis.

The profound thinker always suspects that he is superficial.

Knowledge must be gained by ourselves. Mankind may supply us with facts; but the results, even if they agree with previous ones, must be the work of our own minds.