“Everything that matters in life flows through tubes.”

“I cannot say whether things will get better if we change; what I can say is that they must change if they are to get better.”

“One's first step in wisdom is to question everything - and one's last is to come to terms with everything.”

“Prejudices are so to speak the mechanical instincts of men: through their prejudices they do without any effort many things they would find too difficult to think through to the point of resolving to do them.”

“It is almost impossible to carry the torch of truth through a crowd without singeing somebody's beard.”

“What I do not like about our definitions of genius is that there is in them nothing of the day of judgment, nothing of resounding through eternity and nothing of the footsteps of the Almighty.”

“To make clever people believe we are what we are not is in most instances harder than really to become what we want to seem to be.”