OK, I've been holding back. Here is one of my favorites...
"Once you can accept the universe as being something, expanding into an infinite nothing which is something, wearing stripes with plaid is easy." - Albert Einstein
Many of the quotes we have given have a noteworthy or historic origin forgoetten in it's frequent use. I mean, "Beam me up Scotty" is from Star Trek. "Kiss my grits from Flo at Mel's Diner on TV. Here's another one few know the origin.
"Insanity: doing the same thing over and over again and expecting different results." Albert Einstein