This act [creation], as it is for God, must always remain totally inconceivable to man. For we--even our poets and musicians and inventors--never, in the ultimate sense make. We only build. We always have materials to build from. All we can know about the act of creation must be derived from what we can gather about the relation of the creatures to their Creator
C. S. LewisIn the same way a Christian is not a man who never goes wrong, but a man is enabled to repent and pick himself up and begin over again after each stumble--because the Christ-life is inside him, repairing him all the time, enabling him to repeat (in some degree) the kind of voluntary death which Christ Himself carried out." - Mere Christianity
C. S. LewisA perfect man would never act from a sense of duty; heโd always want the right thing more than the wrong one. Duty is only a substitute for love (of God and of other people) like a crutch which is a substitute for a leg. Most of us need the crutch at times; but of course it is idiotic to use the crutch when our own legs (our own loves, tastes, habits etc.) can do the journey on their own.
C. S. Lewis