At twenty a man is a peacock, at thirty a lion, at forty a camel, at fifty a serpent, at sixty a dog, at seventy an ape, at eighty a nothing at all.
There is none who cannot teach somebody something, and there is none so excellent but he is excelled.
Advice is sometimes transmitted more successfully through a joke than grave teaching.
Friendship multiplies the good of life and divides the evil.
Nothing arouses ambition so much in the heart as the trumpet-clang of another's fame.
Begin with another's to end with your own.