Politeness is a desire to be treated politely, and to be esteemed polite oneself.
Francois de La RochefoucauldThe passions of youth are not more dangerous to health than is the lukewarmness of old age.
Francois de La RochefoucauldA great many men's gratitude is nothing but a secret desire to hook in more valuable kindnesses hereafter.
Francois de La Rochefoucauld