It's not him who's disturbed. But he likes to disturb others... - Jostein Gaarder, Sophie's World

"A true philosopher must never give up."

"A hydrogen atom in a cell at the end of my nose was once part of an elephant's trunk. A carbon atom in my cardiac muscle was once in the tail of a dinosaur."

"He could very likely have appealed for leniency. At least he could have saved his life by agreeing to leave Athens. But had he done this he would not have been Socrates. He valued his conscience--and the truth-- higher than life."

"Wisest is she who knows she does not know."

"And although I have seen nothing but black crows in my life, it doesn't mean that there's no such thing as a white crow. Both for a philosopher and for a scientist it can be important not to reject the possibility of finding a white crow. You might almost say that hunting for 'the white crow' is science's principal task."