It is an embarrassment that the dominant forms of matter in the universe remain hypothetical. Jim Peebles More Quotes by Jim Peebles More Quotes From Jim Peebles You're entitled to say, if you're so smart, why don't you tell me what that dark matter is? And I'll have to confess I don't know. Jim Peebles smart matter dark I think I'd be depressed if everything were nearly all known, but I don't feel any danger of that happening. Jim Peebles danger feels thinking
