If 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 self—himself—he cannot know it, because he is no longer there to know it.

... the body, normally, is never in question: our bodies are beyond question, or perhaps beneath question - they are simply, unquestionably, there. This unquestionability of the body, is, for Wittgenstein, the start and basis of all knowledge and certainty.

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.'

Above all, I have been a sentient being, a thinking animal, on this beautiful planet, and that in itself has been an enormous privilege and adventure.

I am a man of vehement disposition, with violent enthusiasms, and extreme immoderation in all my passions.

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.

Creativity...involves the power to originate, to break away from the existing ways of looking at things, to move freely in the realm of the imagination, to create and recreate worlds fully in one's mind-while supervising all this with a critical inner eye.