"Evil is not born, it is taught."
– Monster, Season 3
Obi-Wan had heard of evil being a cancer in everyone who was so, but in his youth he believed that evil was evil from the beginning. Now he knew better.
All things that were wicked had been taught to be that way. Just witness Darth Maul and Savage Opress. Maul had apparently been raised by Darth Sidious to be the ultimate killing machine. The Zabrak didn't know anything else, so he lived by evil ways. Savage Opress was evidently much the same as his brother. The Nightsisters had brought him to their world and showed him the ways of the dark side, and imbued him with massive strength of body and will to defeat any foe. Dooku was the same, too. Evidently, the mysterious Sidious must have been the one who opened his mind to the dark side and made him betray the Jedi and the Republic, as well as his own principles. Even this Sidious must have had a teacher of some kind, though Obi-Wan had no idea who he was. Maybe that teacher was dead now. Maybe he was hiding in the shadows like Sidious. Obi-Wan didn't know. But he did know evil was always learned.
"All bad people learned the way of wickedness. Remember that next time you're tempted to think that someone vile was rotten from the very beginning."
