Aristotle

“Anybody can become angry—that is easy; but to be angry with the right person, and to the right degree, and at the right time, and for the right purpose, and in the right way—that is not within everybody’s power and it is not easy.”

“A friend to all is a friend to none.”

“Law means good order.”

“One swallow does not make a spring, nor does one fine day.”

“One swallow does not make a summer,
neither does one fine day;
similarly one day or brief time of happiness does not make a person entirely happy.”

“Wit is educated insolence.”