Cognitive Psychology and Neuropsychology

Truly, if you want to ascertain what love there is in you or in another person, then pay attention to how he relates himself to one who is dead. If one wishes to observe a person, it is very important for the sake of the observation that one, in seeing him in a relationship, look at him alone. When one actual person relates himself to another actual person, the result is two, the relationship is constituted, and the observation of the one person alone is made difficult. In other words, the second person covers over something of the first person; moreover, the second person can have so much influence that the first one appears different from what he is. Therefore a double accounting is necessary here; the observation must keep a special account of the influence the second person has on the person who is the object under observation through his personality, his characteristics, his virtues, and his defects. If you could manage to see someone shadowboxing in dead earnest, or if you could prevail upon a dancer to dance solo the dance he customarily dances with another, you would be able to observe his motions best, better than if he were boxing with another actual person or is he were dancing with another actual person. And if, in conversation with someone, you understand the art of making yourself no one, you get to know best what resides in this person.

The Savage interrupted him. "But isn't it natural to feel there's a God?"
"You might as well ask if it's natural to do up one's trousers with zippers," said the Controller sarcastically. "You remind me of another of those old fellows called Bradley. He defined philosophy as the finding of bad reason for what one believes by instinct. As if one believed anything by instinct! One believes things because one has been conditioned to believe them. Finding bad reasons for what one believes for other bad reasons–that's philosophy. People believe in God because they've been conditioned to.
"But all the same," insisted the Savage, "it is natural to believe in God when you're alone–quite alone, in the night, thinking about death …"
"But people never are alone now," said Mustapha Mond. "We make them hate solitude; and we arrange their lives so that it's almost impossible for them ever to have it."

The popular medical formulation of morality that goes back to Ariston of Chios, "virtue is the health of the soul," would have to be changed to become useful, at least to read: "your virtue is the health of your soul." For there is no health as such, and all attempts to define a thing that way have been wretched failures. Even the determination of what is healthy for your body depends on your goal, your horizon, your energies, your impulses, your errors, and above all on the ideals and phantasms of your soul. Thus there are innumerable healths of the body; and the more we allow the unique and incomparable to raise its head again, and the more we abjure the dogma of the "equality of men," the more must the concept of a normal health, along with a normal diet and the normal course of an illness, be abandoned by medical men. Only then would the time have come to reflect on the health and illness of the soul, and to find the peculiar virtue of each man in the health of his soul.