When a man says I cannot, he has made a suggestion to himself. He has weakened his power of accomplishing that which otherwise would have been accomplished.
But reason always cuts a poor figure beside sentiment; the one being essentially restricted, like everything that is positive, while the other is infinite.
I encourage courtesy. To accept nothing less than courtesy, and to give nothing less than courtesy. If we accept being talked to any kind of a way, then we are telling ourselves we are not quite worth the best. And if we have the effrontery to talk to anybody with less than courtesy, we tell ourselves and the world we are not very intelligent.