The body is most fully developed from thirty to thirty-five years of age, the mind at about forty-nine.
AristotleMoral virtue is a mean . . . between two vices, one of excess and the other of defect; . . . it is such a mean because it aims at hitting the middle point in feelings and in actions. This is why it is a hard task to be good, for it is hard to find the middle point in anything.
Aristotle