no man who is resolved to make the most of himself can spare time for personal contention, still less can he afford to take the consequences, including the vitiation of his temper and the loss of self control, yield to larger things to which you show no more than equal rights, and yield to lesser ones though clearly your own, better give your path to a dog, than be bitten by him in contesting for the right, not even killing the dog, will cure the bite