"Eratosthenes's only tools were sticks, eyes, feet, and brains; plus a zest for experiment. With those tools he correctly deduced the circumference of the Earth, to high precision, with an error of only a few percent. That's pretty good figuring for 2200 years ago." - Carl Sagan
"Think of how many religions attempt to validate themselves with prophecy. Think of how many people rely on these prophecies, however vague, however unfulfilled, to support or prop up their beliefs. Yet has there ever been a religion with the prophetic accuracy and reliability of science? ... No other human institution comes close." - Carl Sagan
"A mind is fundamentally an anticipator, an expectation-generator. It mines the present for clues, which it refines with the help of materials it has saved from the past, turning them into anticipations of the future. And then it acts, rationally, on the basis of those hard-won anticipations." - Daniel C. Dennet
"Not only is there no God, but try getting a plumber on weekends." - Woody Allen
"If only God would give me some clear sign! Like making a large deposit in my name at a Swiss bank." - Woody Allen