I was wondering about something the other day. For people who are stupid, we say that they lack a brain. Figuratively, we associate a condition with an organ and say that that organ is missing. So if someone is weak and pliable, we say that they lack a spine or a backbone. Someone cruel and inhuman, we refer to as heartless. With the lack of courage, we associate gutlessness. Emasculation has obvious connections. So I was wondering: which organ or part of the body is there an association with ethics? …