"Many people would sooner die than think. In fact, they do."

"The desire for safety stands against every great and noble enterprise."

"In all affairs, it's a healthy thing now and then to hang a question mark on the things you have long taken for granted."

"Religion is based primarily upon fear. It is partly the terror of the unknown and partly as the wish to feel that you have a kind of elder brother who will stand by you in all your troubles and disput…"

"The degree of civilization in a society can be judged by entering its prisons."