What does not kill me makes me stronger.

He alone is great and happy who requires neither to command nor to obey in order to secure his being of some importance in this world

Where is the man who has the strength to be true, and to show himself as he is?

The formation of one's character ought to be everyone's chief aim.

It is in human nature to relax, when not compelled by personal advantage or disadvantage.

The older we get the more we must limit ourselves if we wish to be active.