Men are never attached to you by favours. Napoleon Bonaparte
The pleasure we derive from doing favours is partly in the feeling it gives us that we are not altogether worthless. It is a pleasant surprise to ourselves. Eric Hoffer
There are slavish souls who carry their appreciation for favours done them so far that they strangle themselves with the rope of gratitude. Friedrich Nietzsche
There can be no greater error than to expect, or calculate, upon real favors from nation to nation. It is an illusion which experience must cure, which a just pride ought to discard. George Washington
The great, the rich, the powerful, too often bestow their favours upon their inferiors in the manner they bestow their scraps upon their dogs, so as neither to oblige man nor dogs. It is no wonder if favours, benefits, and even charities thus bestowed ungraciously, should be as coldly and faintly acknowledged. Lord Chesterfield