turn inwards ⁠—this is what I mean by the growing “internalisation” of man: consequently we have the first growth in man, of what subsequently was called his soul. The whole inner world, originally as thin as if it had been stretched between two layers of skin, burst apart and expanded proportionately, and obtained depth, breadth, and height, when man’s external outlet became obstructed . These terrible bulwarks, with which the social organisation protected itself against the old instincts of freedom (punishments belong preeminently to these bulwarks), brought it about that all those instincts of wild, free, prowling man became turned backwards against man himself