“Of all creatures that breathe and move upon the earth, nothing is bred that is weaker than man.”

“If I cannot move heaven, I will raise hell.”

“Give me a place to stand, and a lever long enough, and I will move the world.”

“Nothing is absolute. Everything changes, everything moves, everything revolves, everything flies and goes away.”

“Everything is more beautiful because we're doomed. You will never be lovelier than you are now. We will never be here again.”

“The journey is its own reward.”

“Be both a speaker of words and a doer of deeds.”