The Age of Spiritual Machines: When Computer Exceed Human Intelligence by Ray Kurzweil (January 2000)

Mind Children: The Future of Robot and Human Intelligence by Hans P. Moravec (March 1990) 

Robot: Mere Machine to Transcendent Mind by Hans P. Moravec (May 2000)

Darwin Among the Machines : The Evolution of Global Intelligence by George B. Dyson (October 1998)

The Society of Mind by Marvin L. Minsky (March 1988)

Godel, Escher, Bach: An Eternal Golden Braid by Douglas R. Hofstadter (January 1999)

The Mind's I: Fantasies and Reflections on Self & Soul by Douglas R. Hofstadter (January 2001)