Silence is one great art of conversation. He is not a fool who knows when to hold his tongue; and a person may gain credit for sense, eloquence, wit, who merely says nothing to lessen the opinion which others have of these qualities in themselves.
William HazlittOur energy is in proportion to the resistance it meets. We attempt nothing great but from a sense of the difficulties we have to encounter, we persevere in nothing great but from a pride in overcoming them.
William Hazlitt