Ifs Quotes (page 226)
If, however, you take a moment to observe how you actually feel immediately after you criticise someone, you'll notice that you will feel a little deflated and ashamed, almost like you're the one who has been attacked. The reason this is true is that when we criticise, it's a statement to the world and to ourselves, "I have a need to be critical." This isn't something we are usually proud to admit.
Richard Carlson