Letters 123.13

This end will be possible for us if we understand that there are two classes of objects which either attract us or repel us. We are attracted by such things as riches, pleasures, beauty, ambition, and other such coaxing and pleasing objects; we are repelled by toil, death, pain, disgrace, or lives of greater frugality. We ought therefore to train ourselves so that we may avoid a fear of the one or a desire for the other. Let us fight in the opposite fashion: let us retreat from the objects that allure, and rouse ourselves to meet the objects that attack.

Seneca, Letters to Lucilius 123.13, translated by Richard Mott Gummere