"To sell your soul is the easiest thing in the world. All you have to do is surrender your reason."

"The only thing that can save the world is the independent thinking of all individuals."

"The mind is an attribute of the individual. There is no such thing as a collective brain."

"The question isn't who is going to let me; it's who is going to stop me."

"The most selfish of all things is the human mind."