Hayden pondered the question. It was really interesting, and also sort of depressing, and could have easily been able to start a discussion. Considering this was potions class, she wondered what they were going to be doing that would warrant such a question. She raised her hand to answer. "Hope." Was that an emotion? ...Yeah. Hayden continued. "If you give someone enough hope, you could manipulate them to do pretty much anything you want."