Ingratitude is the essence of vileness.
Gratitude is the least of virtues, but ingratitude the worst of vices.
Better to expose ourselves to ingratitude than fail in assisting the unfortunate.
Brutes leave ingratitude to man.
Ingratitude sickens benevolence.
Ingratitude is sooner or later fatal to its author.
Ingratitude is treason to mankind.
One finds little ingratitude so long as one is in a position to grant favors.
Next to ingratitude the most painful thing to bear is gratitude.
Ingratitude is the mother of every vice.
Ingratitude is the world's reward.
Ingratitude is the daughter of pride.
