Warning: Spoilers Off applies to these pages. Proceed at your own risk.
Lucifer's speech in the ending cutscene as he taunts War and Strife for falling right into his hands.
Lucifer: The life these creatures knew before was... meaningless. Whispering stories into the fire. Searching the stars for answers to their pathetic existence. I am the answer. See how quickly they adapt, now that their eyes are open! They feel everything their creator denied them. Fear. Hatred. Lust. Perhaps now they will create a Third Kingdom to be reckoned with.
The fact that the Horsemen were forced to cull humanity to prevent them from destroying themselves after Lucifer corrupted them.
