Contradiction is the salt which keeps truth from corruption

Worry, whatever its source, weakens, takes away courage, and shortens life.

Leave each one his touch of folly; it helps to lighten life's burden which, if he could see himself as he is, might be too heavy to carry.

The highest courage is to dare to appear to be what one is

If there were nothing else to trouble us, the fate of the flowers would make us sad.

If all were gentle and contented as sheep, all would be as feeble and helpless.

Be suspicious of your sincerity when you are the advocate of that upon which your livelihood depends.