Music originally had a social function. You were in church, in a concert hall, a marching band; you were dancing. I'm concerned that music could be too separated from its roots and just become a pleasure-giving experience, like a drug.

I suspect that music has qualities both of speech and writing - partly built in, partly individually constructed - and this goes on all through one's life.

There is among doctors, in acute hospitals at least, a presumption of stupidity in their patients.

But the saddest difference between them was that Zazetsky, as Luria said, 'fought to regain his lost faculties with the indomitable tenacity of the damned,' whereas Dr P. was not fighting, did not know what was lost. But who was more tragic, or who was more damned -- the man who knew it, or the man who did not?

We see with the eyes, but we see with the brain as well. And seeing with the brain is often called imagination.

I was fascinated that one could have such perceptual changes, and also that they went with a certain feeling of significance, an almost numinous feeling. I'm strongly atheist by disposition, but nonetheless when this happened, I couldn't help thinking, 'That must be what the hand of God is like.'

It seems that the brain always has to be active, and if the auditory parts of the brain are not getting sufficient input, then they may start to create hallucinatory sounds on their own. Although it is curious that they do not usually create noises or voices; they create music.