On the basis of his actions and writings over many years my guess is Gore suffers from Narcissistic Personality Disorder. The criteria for this diagnosis, as described in the psychiatrist's bible, the Diagnostic and Statistical Manual of Mental Disorders, include a "pervasive pattern of grandiosity (in fantasy or behavior), need for admiration and lack of empathy, beginning by early adulthood and present in a variety of contexts."The author goes on to cite the many ways in which the diagnosis fits Gore's behaviour. And yes, it was all there in his 1993 book Earth in the Balance. In fact it was staggeringly apparent.
The really interesting story is not whether a man who claimed to be the inspiration of the mawkish Love Story, and to have invented the Internet, is a narcissistic fantasist, but how a sufficient number of influential people decided he was a useful fool they could exploit, and created the great global warming scam.