The energy that comes from the thrill of the hunt... It's a dangerous reward that goes hand in hand with death, isn't it?
People manifest all sorts of signs unconsciously. Once you get the knack of it, you can read those signs pretty easily.
But it's not like all his students can dive into that swamp and come back safely.
Say you're at a dark swamp and you can't see the bottom. If you want to find out what's in that swamp, you have no choice but to jump in.
— What would you say is the most cunning animal? One that's at no risk of extinction no matter how many are hunted and killed?
— That'd be humans.