MACDUFF: Even in hell there is no devil worse than Macbeth.
MALCOLM: I admit that he's murderous, lecherous, greedy, lying, deceitful, violent, malicious, and guilty of every sin that has a name. But there is no end, none, to my sexual desires.
Your wives, your daughters, your old women, and your young maids could not fill up the chasm of my lust. My desire would overpower any restraint. Better for Macbeth to reign than one such as me.
MACDUFF: Endless appetites are a kind of tyranny—they have caused the downfall of many kings. But do not be afraid to take the crown that belongs to you. You can satisfy your desires in secret and still appear virtuous in public, deceiving all.
There are more than enough willing women in Scotland. The lust inside you cannot possibly be strong enough to devour all the women who will dedicate their bodies to you once you are king.
MALCOLM: Along with my lust, I am also full of greed. If I became king I would steal the nobles' lands, taking jewels from one man and estates from another. The more I had, the hungrier I would grow, until I'd invent false quarrels with my good and loyal subjects, destroying them to seize their wealth.