Do not have evil-doers for friends; do not have low people for friends; have virtuous people for thy friends; have for thy friends the best of men.
—The Dhammapada
A friend loveth at all times, and a brother is born for adversity.
—The Book of Proverbs
What room can there be for friendship, or who can be a friend to anyone whom he does not love for that one’s own sake?
—Cicero
Make no friendship with an angry man that is given to anger, and with a furious man thou shalt not go.
—The Book of Proverbs
What ill-starr’d rage
Divides a friendship long confirm’d by age?
—Pope
Friends should be weighed, not told; who boasts to have won a multitude of friends has never had one.