Sensitivity (n.) is an increase in both pleasure and pain. We cannot be more sensitive to pleasure without being more sensitive to pain.
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Sensitivity (n.) is the body's predicament: it is soft and pliant, living in a universe mostly of rock and fire.
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Sensitivity (n.) is the answer to inevitable pain, not numbness: feeling out how the organism itself wants to react.
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Sensitivity (n.) is measured by our unwillingness to feel: the finer the instrument, the greater its capacity for pain, and so its reluctance to be hurt.
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Sensitivity (n.) is paid for in vulnerability: you can suffer less only by becoming more of a stone and less of a man.