"I only know of the one, myself." He shrugged, keeping it casual as he could because he knew how badly the conversation would go if it was someone from home.

"Actually... that sounds very familiar to home, too." A deep breath, and he expanded on it, "Happiness, joy, blissful peace... That is light in my worlds. Sadness, anger, fear, jealousy- is the dark. Both are needed for balance, because the dark is half of everything." One can't be healthy without one or the other. Anyone who thought that lived in ignorance. "But most who claim that and embrace the dark tend to also be the ones who aim to upset the balance completely."

A friendly warning, for others who'd be talking about it so much someone could start a drinking game about it.