Unselfishness, true, and self-control.—Jataka.
The religious mendicant, wisely reflecting, is patient under cold and heat, under hunger and thirst, ... under bodily sufferings, under pains however sharp.—Sabbasava-sutta.
Though a man conquer a thousand thousand men in battle, a greater conqueror still is he who conquers himself.—Udanavarga.
Root out the love of self.—Jataka.
The man of honor should minister to his friends ... by liberality, courtesy, benevolence, and by doing to them as he would be done by.—Sigalovada-sutta.
Practice the art of "giving up."—Fo-sho-hing-tsan-king.
Speak not harshly to anybody.—Dhammapada.
May I speak kindly and softly to every one I chance to meet.—Inscription in Temple of Nakhon Vat.
Offensive language is harsh even to the brutes.—Suttavaddhananiti.
Courtesy is the best ornament. Beauty without courtesy is like a grove without flowers.—Buddha-charita.