“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.”
More from Sir Arthur Conan Doyle
“The sight of a friendly face in the great wilderness of London is a pleasant thing indeed…”
“It is a mistake to confound strangeness with mystery.”
“My dear Watson, you were born to be a man of action. Your instinct is always to do…”
“If you are clever enough to bring destruction upon me, rest assured that I shall do as…”