In all the affairs of life, social as well as political, courtesies of a small and trivial character are the ones which strike deepest in the grateful and appreciating heart. Henry Clay
Life is not so short but that there is always time for courtesy. Ralph Waldo Emerson
There is a courtesy of the heart; it is allied to love. From it springs the purest courtesy in the outward behavior. Johann Wolfgang von Goethe
The greater man, the greater courtesy. Lord Alfred Tennyson
All doors open to courtesy. Thomas Fuller
Gratitude is the most exquisite form of courtesy. Jacques Maritain
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. Francis Bacon
Courtesy is as much a mark of a gentleman as courage. Theodore Roosevelt