“If I can help somebody as I pass along, if I can cheer somebody with a word or song, if I can show somebody he’s travelling wrong, then my living will not be in vain. If I can do my duty as a Christian ought, if I can bring salvation to a world over wrought, if I can spread the message as the Master taught, then my living will not be in vain.”

Martin Luther King Jr., civil rights leader (quote from his sermon preached at Ebenezer Baptist Church in February 1968, two months before he was assassinated).