"Sometimes one pays most for the things one gets for nothing." "I want to know God's thoughts; the rest are details." "A person starts to live when he can live outside himself." "Science without religion is lame. Religion without science is blind." "Common sense is the collection of prejudices acquired by age eighteen." "If A is a success in life, then A equals x plus y plus z. Work is x; y is play; and z is keeping your mouth shut." "Two things are infinite: the universe and human stupidity; and I'm not sure about the universe." "I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones." "In order to form an immaculate member of a flock of sheep one must, above all, be a sheep."