Enough
The English word greed comes from the same root as giddha, the vulture.
The vulture is one of the ugliest birds you can conceive of. And greed is certainly one of the ugliest things in man that you can think of.
But the mind is a vulture. It is never satisfied with anything. You go on giving to it, it goes on taking, and it goes on asking for more. It never feels grateful; it is always complaining that it is not enough. Nothing is enough to the mind.
-Osho, "Beyond Enlightenment, #8, Q1"