“The origin of the absurd idea of immortal life is easy to discover; it is kept alive by hope and fear, by childish faith, and by cowardice.”

“The best that we can do is to be kindly and helpful toward our friends and fellow passengers who are clinging to the same speck of dirt while we are drifting side by side to our common doom.”

“Chase after the truth like all hell and you’ll free yourself, even though you never touch its coat tails.”

“I am an agnostic; I do not pretend to know what many ignorant men are sure of.”