It would be nice if psychologists would be honest and introspective enough to call their field an Art... at least until the appearance of a Hari Seldon.
Gottman does seem to be a great relationships artisan/artist.
btw, heres a blurb on Asimovs Foundation series fictional character http://en.wikipedia.org/wiki/Hari_Seldon,
the founder of mathematical psychology of masses, 'psychohistory'.