Many men have a secret monster in this same manner, a dragon which gnaws them, a despair which inhabits their night. Such a man resembles other men, he goes and comes. No one knows that he bears within him a frightful parasitic pain with a thousand teeth, which lives within the unhappy man, and of which he is dying. No one knows that this man is a gulf. He is stagnant but deep. From time to time, a trouble of which the onlooker understands nothing appears on his surface. A mysterious wrinkle is formed, then vanishes, then re-appears; an air-bubble rises and bursts. It is the breathing of the unknown beast.
( Victor Hugo )
[ Les Misérables ]
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