(Replying to myself to avoid the "this comment was edited" mark.)

The link is to an unsourced quote, and Google just turns up repetitions of it. Given the striking relationship between the quote and the reputation of its purported utterer, I am inclined to doubt its authenticity; not because it sounds like something he wouldn't have said, or that he would have said, but because the idea that he said it is attractive enough to explain its repetition in quotes files everywhere.