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

"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."

"What, would'st thou have a serpent sting thee twice?"

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