Nothing more detestable does the earth produce than an ungrateful man. (Quote by - Decimus Magnus Ausonius)

That man may last, but never lives, Who much receives, but nothing gives; Whom none can love, whom none can thank,-- Creation's blot, creation's blank. (Quote by - Thomas Gibbons)

A proud man is seldom a grateful man, for he never thinks he gets as much as he deserves. (Quote by - Henry Ward Beecher)

Deserted, at his utmost need, By those his former bounty fed; On the bare earth exposed he lies, With not a friend to close his eyes. (Quote by - John Dryden)