"Would you convey my compliments to the purist who reads your proofs and tell him or her that I write a sort of broken-down patois which is something like the way a Swiss waiter talks, and that when I split an infinitive, God damn it, I split it so it will stay split, and when I interrupt the velvety smoothness of my more or less literate syntax with a few sudden words of bar-room vernacular, that is done with the eyes wide open and the mind relaxed but attentive."
There's also a really great poem that follows this that is totally worth reading, worth copying, worth hanging up in your room. Really, it's great. Go read it! It's too long for me to type up here.