buddha

"And if they ask: ‘What is the cause, what is the reason why greed arises, and once arisen it increases and grows?’ You should say: ‘The beautiful feature of things. When you attend improperly to the beautiful feature of things, greed arises, and once arisen it increases and grows. This is the cause, this is the reason why greed arises, and once arisen it increases and grows.’"

-The Buddha

Annatitthiya Sutta (Anguttara Nikaya 3.68)