The old man suddenly became intent, his brows knitted, his lips pursed. He stood motionless, in deep thought, presenting the picture that I love to see: a patient in the actual moment of discovery - half-appalled, half-amused - seeing for the first time exactly what is wrong and, in the same moment, exactly what there is to be done. This is the therapeutic moment.
( Oliver Sacks )
[ The Man Who Mistook His Wife ]
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