At this juncture I cannot avoid trying to give a tentative and provisional expression to my own hypothesis concerning the origin of the bad conscience: it is difficult to make it fully appreciated, and it requires continuous meditation, attention, and digestion. I regard the bad conscience as the serious illness which man was bound to contract under the stress of the most radical change which he has ever experienced--that change, when he found himself finally imprisoned within the pale of society and of peace. Just like the plight of the water-animals, when they were compelled either to become land-animals or to perish, so was the plight of these half-animals, perfectly adapted as they were to the savage life of war, prowling, and adventure--suddenly all their instincts were rendered worthless and "switched off." Henceforward they had to walk on their feet--"carry themselves," whereas heretofore they had been carried by the water: a terrible heaviness oppressed them. They found themselves clumsy in obeying the simplest directions, confronted with this new and unknown world they had no longer their old guides--the regulative instincts that had led them unconsciously to safety--they were reduced, were those unhappy creatures, to thinking, inferring, calculating, putting together causes and results, reduced to that poorest and most erratic organ of theirs, their "consciousness." I do not believe there was ever in the world such a feeling of misery, such a leaden discomfort--further, those old instincts had not immediately ceased their demands! Only it was difficult and rarely possible to gratify them: speaking broadly, they were compelled to satisfy themselves by new and, as it were, hole-and-corner methods. All instincts which do not find a vent without, _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 pre-eminently to these bulwarks), brought it about that all those instincts of wild, free, prowling man became turned backwards against man himself. Enmity, cruelty, the delight in persecution, in surprises, change, destruction--the turning all these instincts against their own possessors: this is the origin of the "bad conscience." It was man, who, lacking external enemies and obstacles, and imprisoned as he was in the oppressive narrowness and monotony of custom, in his own impatience lacerated, persecuted, gnawed, frightened, and ill-treated himself; it was this animal in the hands of the tamer, which beat itself against the bars of its cage; it