Thus the feeling I sometimes have - which all of us who work closely with aphasiacs have - that one cannot lie to an aphasiac. He cannot grasp your words, and cannot be deceived by them; but what he grasps he grasps with infallible precision, namely the expression that goes with the words, the total, spontaneous, involuntary expressiveness which can never be simulated or faked, as words alone can, too easily.
Oliver SacksIf a man has lost a leg or an eye, he knows he has lost a leg or an eye; but if he has lost a selfโhimselfโhe cannot know it, because he is no longer there to know it.
Oliver SacksAbout 10 percent of the hearing impaired get musical hallucinations, and about 10 percent of the visually impaired get visual hallucinations.
Oliver SacksEnhancement not only allows the possibilities of a healthy fullness and exuberance, but of a rather ominous extravagance, aberration, monstrosity ... This danger is built into the very nature of growth and life. Growth can become over-growth, life 'hyper-life' ... The paradox of an illness which can present as wellness - as a wonderful feeling of health and well-being, and only later reveal its malignant potentials - is one of the chimaeras, tricks and ironies of nature.
Oliver Sacks