And Dan Gilbert's book, Stumbling on Happiness, is a very, very funny book and very smart book and is now on The New York Times bestseller list.

丹·吉尔伯特的书《幸福的绊脚石》是一本非常非常有趣、非常聪明的书，现在已经跻身《纽约时报》畅销书排行榜。