Betray a friend, and you'll often find you have ruined yourself.
A doubtful friend is worse than a certain enemy. Let a man be one thing or the other, and we then know how to meet him.
The level of our success is limited only by our imagination and no act of kindness, however small, is ever wasted.
In a crisis, give help first and then advice.
Self-help is the best help
It is not only fine feathers that make fine birds.