Douglas R. Hofstadter and Daniel C. Dennett
Publisher: Bantam Books (1982)

The way I see it, consciousness has got to come from a precise pattern of organization – one that we haven’t yet figured out how to describe in any detailed way. But I believe we will gradually come to understand it. In my view consciousness requires a certain way of mirroring the external universe internally, and the ability to respond to that external reality on the basis of the internally represented model. And then in addition, what’s really crucial for a conscious machine is that it should incorporate a well-developed and flexible self-model.