Humans are amphibians - half spirit and half animal. As spirits they belong to the eternal world, but as animals they inhabit time.
C. S. LewisAs St. Paul points out, Christ never meant that we were to remain children in intelligence: on the contrary, He told us to be not only "as harmless as doves," but also "as wise as serpents." He wants a child's heart, but a grown-up's head.
C. S. LewisThe Christian is in a different position from other people who are trying to be good. They hope, by being good, to please God if there is one; or — if they think there is not — at least they hope to deserve approval from good men. But the Christian thinks any good he does comes from the Christ-life inside him. He does not think God will love us because we are good, but that God will make us good because He loves us; just as the roof of a greenhouse does not attract the sun because it is bright, but becomes bright because the sun shines on it.
C. S. Lewis