What is clear to one man may be doubtful to another. — Lloyd Kenyon, 1st Baron Kenyon Copy Share Image
A man, doubtful of his dinner, or trembling at a creditor, is not much disposed to abstracted meditation, or remote enquiries. — Samuel Johnson Copy Share Image
He saw something that makes a man doubtful of the constancy of the realities outside himself. It was the shocking discovery that… — John Steinbeck Copy Share Image
