Renowned scientists Christakis and Fowler present compelling evidence for our profound influence on one another's tastes, health, wealth, happiness, beliefs, even weight, as they explain how social networks form and how they operate.

"A God's eye view of social relationships that may make you dizzy. Every business leader, teacher, and parent should see their life from this vantage." -Chip Heath, coauthor Made to Stick

"A lively, well written account of social networks and their power to shape our lives. The world becomes smaller and more meaningful after reading this engaging book." -Sudhir Venkatesh, author of Gang Leader for a Day

"The possibility that we all participate in one mind challenges religion, philosophy, and the meaning of life itself." -San Francisco Chronicle Deepak Chopra

"In a category of works of brilliant originality that can stimulate and enlighten and can sometimes even change the way we understand the world." -The New York Times

"A clever, cogent, and enjoyable look at the latest thinking about humans in community. It provides a swath of important research in one place for readers and makes it a stimulating read."-Michael Fitzgerald, Boston Globe

"An intellectual but accessible approach. The authors make a persuasive case for the power of social networks to affect everything and everyone." -Business Week