Elements and birthdays have been intertwined for me since boyhood, when I learned about atomic numbers.

In terms of brain development, musical performance is every bit as important educationally as reading or writing.

And so was Luria, whose words now came back to me: ‘A man does not consist of memory alone. He has feeling, will, sensibility, moral being ... It is here ... you may touch him, and see a profound change.’ Memory, mental activity, mind alone, could not hold him; but moral attention and action could hold him completely.

There will be no one like us when we are gone, but then there is no one like anyone else, ever. When people die, they cannot be replaced. They leave holes that cannot be filled, for it is the fate - the genetic and neural fate - of every human being to be a unique individual, to find his own path, to live his own life, to die his own death.

Music, uniquely among the arts, is both completely abstract and profoundly emotional. It has no power to represent anything particular or external, but it has a unique power to express inner states or feelings. Music can pierce the heart directly; it needs no mediation.

Psychotic hallucinations, whether they are visual or vocal, they address you. They accuse you. They seduce you. They humiliate you. They jeer at you. You interact with them.

I think there are dozens or hundreds of different forms of creativity. Pondering science and math problems for years is different from improvising jazz. Something which seems to me remarkable is how unconscious the creative process is. You encounter a problem, but can't solve it.