Nothing can be so amusingly arrogant as a young man who has just discovered an old idea and thinks it is his own. — Sidney J. Harris. Topics referred to by the same term Youth
A cynic is not merely one who reads bitter lessons from the past, he is one who is prematurely disappointed in the future.
Regret for the things we did can be tempered by time; it is regret for the things we did not do that is inconsolable.