Worry, whatever its source, weakens, takes away courage, and shortens life.
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.
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.
Contradiction is the salt which keeps truth from corruption
Those who believe in our ability do more than stimulate us. They create for us an atmosphere in which it becomes easier to succeed.