When a person cannot deceive himself the chances are against his being able to deceive other people.
Mark TwainThe most outrageous lies that can be invented will find believers if a person only tells them with all his might.
Mark TwainThat is the way of the scientist. He will spend thirty years in building up a mountain range of facts with the intent to prove a certain theory; then he is so happy with his achievement that as a rule he overlooks the main chief fact of all-that all his accumulation proves an entirely different thing.
Mark Twain