Post date: Oct 02, 2012 2:25:48 PM
1. http://www.npr.org/blogs/13.7/2012/02/21/147199088/are-you-hardwired-for-compassion-how-about-cruelty
2. http://www.guardian.co.uk/science/2012/jul/15/interview-dr-love-paul-zak
3. http://greatergood.berkeley.edu/article/item/the_compassionate_instinct
4. http://kevishere.wordpress.com/2011/04/08/on-optimism-and-human-nature/
