All cruelty springs from weakness.

It is quality rather than quantity that matters.

The deferring of anger is the best antidote to anger.

Shun no toil to make yourself remarkable by some talent or other; yet do not devote yourself to one branch exclusively. Strive to get clear notions about all. Give up no science entirely; for science is but one.

Laugh at your problems; everybody else does.

The day which we fear as our last is but the birthday of eternity.