“Don't be ashamed for lack of knowledge. The real crime is having but not using it”

“Respect fails before love”

“If you don't know how to make fire you can ask someone or stay in the cold”

“Dogs are the only non-primate animal to look into man's eyes. My mother, behind my ears.”

“The ultimate foundation of spirituality is the recognition that there can't be such a thing as a purposeful life in a purposeless universe.”

“George, she says it's the truth that matters. We live and die for the chance to maybe tell a little bit of the truth, maybe shame the Devil just a little bit before we go.”

“Man must learn to know the universe precisely as it is, or he cannot successfully find his place in it. A man should therefore use his reasoning faculty in all matters involving truth, and especial...”