"You know it's complicated when there's a choo-choo involved." - Joe Orenstien

"Can you give us a physical example?" - Andy Balk
"It is right here." - Radu Roiban, pointing at a nasty differential equation

"If you are goal-oriented, your mind becomes bound and you fail to criticize." - Sourav Mandal's LiveJournal, accessed 8 March, 2009.

"...whatever happens as a result is better than the nothingness that is inevitable with silence." - Janis Joplin

"Political extremism involves two prime ingredients: an excessively simple diagnosis of the world's ills, and a conviction that there are identifiable villans back of it all." -- John Gardner, No Easy Victories

"Some people think Wheeler's gotten crazy in his later years; but he's always been crazy." -- Richard Feynnman of John Wheeler, as quoted in "Nature Physics", Vol. 4, May 2008, pg. 355.

"The best science celebrates uncertainty, to be willing to make mistakes and learn from them, to take risks, to see situations -- any situation (not just scientific) -- from more than one perspective, to collaborate, to observe and play. In other words science is a way of being that, at its best, is natural, creative, adaptive and compassionate." -- Beau Lotto, as quoted in a Discover Blog, accessed 22 December, 2010.