The follies of the wise man are known to himself, but hidden from the world.

To tremble before anticipated evils is to bemoan what thou hast never lost.

At the end of life thoughts hitherto impossible come to the collected mind, like good spirits which let themselves down from the shining heights of the past.

The most damaging prejudice consists of banning any kind of investigation of nature.

Battle not with monsters, for then you become one.

Every solution of a problem is a new problem.

Time is my estate: to Time I'm heir.