"One thousand five hundred years ago, everybody knew the Earth was the center of the universe. Five hundred years ago, everybody knew that the Earth was flat... and fifteen minutes ago, you knew people were alone on this planet. Think about what you'll know tomorrow." -- Agent K, "Men in Black"
Five hundred years ago, everybody knew that the Earth was flat...
Not true! The ancient Greeks measured the circumference of the Earth to within 1%.
This is our monthly thread for collecting these little gems and pearls of wisdom, rationality-related quotes you've seen recently, or had stored in your quotesfile for ages, and which might be handy to link to in one of our discussions.