Ask yourself if you would rather be rich, or happy; for to be rich is neither good in itself nor wholly in your power, but to be happy is both good and possible.
Epictetus' Fragments, xix (Didot)
It is better to be healthy on a narrow bed than sick in a wide one; and so it is better to be contented with few possessions than have many and be discontented.
Epictetus' Fragments, xxiv (Didot)
It is not poverty, but covetousness, that causes sorrow. It is not wealth, but philosophy, that gives security.
Epictetus' Fragments, xxv (Didot)