"Kiittämättömyys on maailman palkka. (Sievi, Northern Bothnia) (KRA)"

"People who bite the hand that feeds them usually lick the boot that kicks them."

"A man is very apt to complain of the ingratitude of those who have risen far above him."

"[...] But to tell the truth, I'm still of two minds as to whether I should publish the book or not. For men's tastes …"

"Blow, blow, thou winter wind, Thou art not so unkind As man's ingratitude: Thy tooth is not so keen, Because thou art…"

"Ingratitude is monstrous; and for the multitude to be ingrateful, were to make a monster of the multitude."

"This was the most unkindest cut of all; For when the noble Cæsar saw him stab, Ingratitude, more strong than traitor'…"

"Ingratitude! thou marble-hearted fiend, More hideous, when thou show'st thee in a child, Than the sea-monster!"

"All the stor'd vengeances of heaven fall On her ungrateful top."

"Deserted, at his utmost need, By those his former bounty fed; On the bare earth exposed he lies, With not a friend to…"