We may express them [emotions] physically slightly differently, and it's of course graded depending on the circumstance, but the essence of the process is going to be the same, unless one of us is not quite well put together and is missing something, otherwise it's going to be the same.

There is a sequence of events in our lives and so there's a temporal aspect to our experience that brings by itself, sense into the story. In other words, you were not walking before you were born and you were not doing X and Y before you did something else first. So there's a sequencing of events that imposes a certain structure to the story.

Imagine, for example, birds. When they look out at the world, they have a sense that they are alive. If they are in pain, they can do something about it. If they have hunger or thirst, they can satisfy that. It's this basic feeling that there is life ticking away inside of you.

There's something that intervenes and is very important which has to do with value. Value in the true biological sense, which is that contrary to what many people seem to think, taking it at face value - sorry for the pun - we do not give the same amount of emotional significance to every event.

What happens [in a coma] is that you lose the grounding of the self, you no longer have access to any feeling of your own existence.

You know, mind allows us to portray in different sensory modalities, visual, auditory, olfactory, you name it, what we are like and what the world is like. But this very, very important quality of subjectivity, this quality that allows us to take a distant view and say, "I am here, I exist, I have a life and there are things around me that refer to me." That me-ness, M-E-hyphen, that is what really constitutes consciousness.

The problem that we, as living organisms, face - and not we only, humans, but any living organism faces - is the management of life.