“A theory is a battlefield in your head.”

“Strange as it may seem—or perhaps it does not seem so strange—they all had the same thought: it was so much easier to kill humans on the battlefield than animals in cages, even if, on the battlefield, one might end up being killed oneself.”

“The whole terrible fight occured in the area of imagination. That is the precise location of our battlefield. It is there, that we experience our victories and defeats.”

“For every theory there has to be counterevidence--otherwise science wouldn't progress.”

“Open your eyes, train your ears, use your head. If a mind you have, then use it while you can.”

“Maybe she thought the garbage and rocks in your head were interesting. But finally, garbage is garbage and rocks are rocks.”

“If you try to use your head to think about things, people don't want to have anything to do with you”