William Shakespeare on Ingratitude

“I hate ingratitude more in a man, Than lying, vainness, babbling, drunkenness, Or any taint of vice.”

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

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

“Blow, blow, thou winter wind, Thou art not so unkind As man's ingratitude: Thy tooth is not so keen, Because thou art not seen, Although thy breath be rude.”

“This was the most unkindest cut of all; For when the noble Cæsar saw him stab, Ingratitude, more strong than traitor's arms, Quite vanquish'd him; then burst his mighty heart; And, in his mantle muffling, up his face, Even at the base of Pompey's statue, Which all the while ran blood, great Cæsar fell.”