People who bite the hand that feeds them usually lick the boot that ki — Ingratitude

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

"Blow, blow, thou winter wind, Thou art not so unkind As mans ingratitude: Thy tooth is not so keen, Because thou art not seen, Although thy breath be rude."

"Ingratitudes a weed of every clime, It thrives too fast at first, but fades in time."

"Ingratus est, qui beneficium accepisse se negat, quod accepit: ingratus est, qui dissimulat; ingratus, qui non reddit; ingratissimus omnium, qui oblitus est."

"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."

"Ingratus unus miseris omnibus nocet."