Hating the sin but not the sinner

On one of the Facebook pages I visit daily there appeared a quotation attributed to C.S. Lewis:

“There is someone I love, even though I don’t approve of what he does. There is someone I accept, though some of his thoughts and actions revolt me. There is someone I forgive, though he hurts the people I love the most. That person is...me.”

I like the quotation very much. It does seem like something Lewis could have written. But since it was presented without a source my curiosity about where he wrote it sent me to Google. Someone at Essential C.S. Lewis has done the research:

It’s just the type of thing you would expect C.S. Lewis to encourage somewhere in his writings. In fact he does! But, he just does NOT use those exact words. While known for making concise profound statements, he expresses this sentiment with a lot more words (details below). So, what we have pictured above is another example of taking material from C.S. Lewis and paraphrasing it. ....

All is not lost, because there is a good candidate for where those thoughts originated. In Mere Christianity there is a chapter entitled “Forgiveness” (Book 3, Chapter 7) where at the end of the fourth paragraph he begins a second point that sounds like the ideas in this questionable quotation.

From that chapter in Mere Christianity:

.... I remember Christian teachers telling me long ago that I must hate a bad man's actions, but not hate the bad man: or, as they would say, hate the sin but not the sinner.

For a long time I used to think this a silly, straw-splitting distinction: how could you hate what a man did and not hate the man? But years later it occurred to me that there was one man to whom I had been doing this all my life—namely myself. However much I might dislike my own cowardice or conceit or greed, I went on loving myself. There had never been the slightest difficulty about it. In fact the very reason why I hated the things was that I loved the man. Just because I loved myself, I was sorry to find that I was the sort of man who did those things. Consequently, Christianity does not want us to reduce by one atom the hatred we feel for cruelty and treachery. We ought to hate them. Not one word of what we have said about them needs to be unsaid. But it does want us to hate them in the same way in which we hate things in ourselves: being sorry that the man should have done such things, and hoping, if it is anyway possible, that somehow, sometime, somewhere, he can be cured and made human again. .... (emphasis added)