Sasuke: Snakes can sense things through temperature, and they can also do it with their sense of smell by passing the smell in the mouth." Itachi: You've learnt a lot...Dr. Snakes
Masashi KishimotoBeing hurt inevitably breeds feelings of hatred towards your attacker. But when we hurt others, we have to deal with their hatred for us, and our own feelings of guilt. But knowing what it feels like to be hurt is exactly why we try to be kind to others. That's what makes us human.
Masashi Kishimoto