Thoughts on Charity, from C.S. Lewis’ Mere Christianity:

“The rule for all of us is perfectly simple. Do not waste time bothering whether you ‘love’ your neighbor; act as if you did. As soon as we do this we find one of the great secrets. When you are behaving as if you loved someone, you will presently come to love him. If you injure someone you dislike, you will find yourself disliking him more. If you do him a good turn, you will find yourself disliking him less…

The difference between a Christian and a worldly man is not that the worldly man has only affections or ‘likings’ and the Christian has only ‘charity’. The worldly man treats certain people kindly because he ‘likes’ them: the Christian, trying to treat everyone kindly, finds himself liking more and more people as he goes on–including people he could not even have imagined himself liking at the beginning.”