"No man ever got very high by pulling other people down. The intelligent merchant does not knock his competitors. The sensible worker does not knock those who work with him. Don't knock your friends. Don't knock your enemies. Don't knock yourself."
Alfred, Lord Tennyson was an English poet and Poet Laureate during much of Queen Victoria's reign. He wrote major Victorian works including In Memoriam A.H.H. and The Charge of the Light Brigade. He died in 1892.