He succumbed to forbidden meanings and was captured by their dark side, succumbing to the dark influence of knowledge. He could not return his past self, knowledge completely changed his calm, reserved and cold character to a more severe, cruel and mocking, full of malice and passion for ridicule. Madness has seized him, and he no longer looks like himself. At least as long as knowledge rules them and as long as he is under their control, he is dangerous.