"A lifetime of happiness! No Man could bear it: It would be hell on Earth." Eric Weiner wisely quotes George Bernard Shaw in this hilarious, well-informed and surprisingly profound tale of the NPR corespondent globe-trotting quest in search of what makes us happy. It's an account of Weiner's diverting, anecdotal travels to the Netherlands (where happiness is being quantified) to Bhutan (the land of Gross National Happiness), Switzerland (boredom is happiness), Iceland (small, cosmopolitan, balanced) and Moldova (no happiness there), along with Qatar, Thailand, Great Britain, India and back home to America.  (GEN430, $25.99)