It was easier to know it than to explain why I know it. If you were asked to prove that two and two made… — Arthur Conan Doyle
It was easier to know it than to explain why I know it. If you were asked to prove that two and two made four, you might find some difficulty, and yet you are quite sure of the fact.
p. 26Source: Wikiquote · CC BY-SA 4.0

