Quote by Elie Metchnikoff

"Man can adapt himself to anything, but he cannot adapt himself to anything without effort."

"The study of the lower organisms is the key to the understanding of man."

"Optimism is a moral duty."

"Life is a process of constant transformation."

"Money is important, but it's not everything"

"Money doesn't buy happiness, but it buys things that make you forget you're unhappy."

"Money isn't everything."

"Money is meaningless without purpose."