The Happiness Hypothesis: Finding Modern Truth in Ancient Wisdom : Paperback : BASIC BOOKS : 9780465028023 : 0465028020 : 26 Dec 2006 : In his widely praised book, award-winning psychologist Jonathan Haidt examines the world\'s philosophical wisdom through the lens of psychological science, showing how a deeper understanding of enduring maxims-like Do unto others as you would have others do unto you, or What doesn\'t kill you makes you stronger-can enrich and even transform our lives.