Anyone can become angry - that is easy, but to be angry with the right person, to the right degree, at the right time, for the right purpose, and in the right way - that is not easy. (Aristotle)
Anger, if not restrained, is frequently more hurtful to us than the injury that provokes it. (Seneca)
Man is the only creature endowed with the power of laughter; is he not also the only one that deserves to be laughed at ? (Greville)