Martin Luther King, Jr. speaking to students at Barratt Junior High School in Philadelphia on October 26, 1967, six months before he was assassinated:

If it falls your lot to be a street sweeper, sweep streets like Michelangelo painted pictures, sweep streets like Beethoven composed music, sweep streets like Shakespeare wrote poetry. Sweep streets so well that all the hosts of heaven and earth will have to pause and say: Here lived a great street sweeper who swept his job well.