Бедному нужно многое, жадному - все

Unlike a poor man, there is no satisfying a greedy person. See Ненасытному все мало (H)

Cf: Avarice is never satisfied (Am.). A poor man wants some things, a covetous man all things (Br.). Poverty is in want of much, avarice of everything (Br.). Poverty wants many things and avarice (covetousness) all (Br.). Poverty wants many things, but covetousness all (Am.). Poverty wants some things, luxury many things, avarice all (Am.)