More quotes by C.S. Lewis, The Four Loves

"I have no duty to be anyone's Friend and no man in the world has a duty to be mine. No claims, no shadow of necessity. Friendship is unnecessary, like philosophy, like art, like the universe itself (for God did not need to create). It has no survival value; rather it is one of those things which give value to survival."
"In God there is no hunger that needs to be filled, only plenteousness that desires to give."
"Every Christian would agree that a man's spiritual health is exactly proportional to his love for God."
"As Venus within Eros does not really aim at pleasure, so Eros does not aim at happiness. We may think he does, but when he is brought to the test it proves otherwise... For it is the very mark of Eros that when he is in us we had rather share unhappiness with the Beloved than be happy on any other terms."
"Friendship is unnecessary, like philosophy, like art.... It has no survival value; rather it is one of those things which give value to survival."