It is better to have too much courtesy than too little, provided you are not equally courteous to all, for that would be injustice

Courtesy is the one coin you can never have too much of or be stingy with

An excess of courtesy is discourtesy

Gratitude is the most exquisite form of courtesy

In Courtesy, rather pay a penny too much than too little

There is something more - the spirit, or the soul. I think that that quality encourages our courtesy and care and our minds. And mercy, and identity

All doors open to courtesy

Courtesy on one side can never last long

If a man be gracious and courteous to strangers, it shows he is a citizen of the world, and that his heart is no island cut off from other lands, but a continent that joins to them

Courteous men learn courtesy from the discourteous