He told Jinbe that he wasn't actually any different than Arlong in terms of beliefs. He said killing the humans would result in greater retaliation from them. It seemed like deep down he wanted to kill them but didn't want to lower himself to their level.
He represents the middle ground between Jinbei and Arlong/Hody. I think he wouldn't go as far as to commit genocide against the humans, but he detested them so much that he will never want to seek equality with them.