If you have just an emotion, you would not necessarily feel it. To feel an emotion, you need to represent in the brain in structures that are actually different from the structures that lead to the emotion, what is going on in the organs when you're having the emotion.

Scott Fitzgerald said famously that "he who invented consciousness would have a lot to be blamed for." But he also forgot that without consciousness, he would have no access to true happiness or even the possibility of transcendence.

It's very interesting to think about the distinction with mind, which I just made in very general terms, but it can be made more profound when we think that there are many species, many creatures on earth that are very likely to have a mind, but are very unlikely to have a consciousness in the sense that you and I have.

A mind is so closely shaped by the body and destined to serve it that only one mind could possibly arise in it. No body, never mind.

The autobiographical self has prompted extended memory, reasoning, imagination, creativity and language. And out of that came the instruments of culture - religions, justice, trade, the arts, science, technology.

So, you can define emotions very simply as the process of perceiving what is going on in the organs when you are in the throws of an emotion, and that is achieved by a collection of structures, some of which are in the brain stem, and some of which are in the cerebral cortex, namely the insular cortex, which I like to mention not because I think it's the most important, it's not.

The mechanism of primary emotions does not describe the full range of emotional behaviors. They are, to be sure, the basic mechanism. However, I believe that in terms of an individual's development they are followed by mechanisms of secondary emotions, which occur once we begin experiencing feelings and forming systematic connections between categories of objects and situations, on the one hand, and primary emotions, on the other.