Revenge is a much more punctual paymaster than gratitude

Revenge is profitable, gratitude is expensive

There are minds so impatient of inferiority that their gratitude is a species of revenge, and they return benefits, not because recompense is a pleasure, but because obligation is a pain

Revenge is Always Sweet, it's the Aftertaste that's Bitter.

In life we shall find many men that are great, and some that are good, but very few men that are both great and good.

Imitation is the sincerest form of flattery.