We must realize that each of us is ruled by two principles which we follow wherever they lead: one is our inborn desire for pleasures, the other is our acquired judgment that pursues what is best. Sometimes these two are in agreement; but there are times when they quarrel inside us, and then sometimes one of them gains control, sometimes the other. Now when judgment is in control and leads us by reasoning toward what is best, that sort of self-control is called ‘being in your right mind’; but when desire takes command in us and drags us without reasoning toward pleasure, then its command is known as ‘outrageousness’.

Plato, Phaedrus
(via philosophybits)