I am an invisible man. I am a man of substance, of flesh and bone, fiber and liquids - and I might even be said to possess a mind. I am invisible, understand, simply because people refuse to see me.
He that gives good advice, builds with one hand; he that gives good counsel and example, builds with both; but he that gives good admonition and bad example, builds with one hand and pulls down with the other.
I had a very famous trainer tell me once, 'You can usually train a wild animal but never tame a wild animal, ever.' They are always going to be wild, no matter what anybody says.