Увлекательная книга на эту же тему:The Happiness Hypothesis: Finding Modern Truth in Ancient Wisdomby Jonathan Haidthttp://www.goodreads.com/book/show/96884.The_Happiness_Hypothesis“Just as plants need sun, water, and good soil to thrive, people need love, work, and a connection to something larger. It is worth striving to get the right relationships between yourself and others, between yourself and your work, and between yourself and something larger than yourself. If you get these relationships right, a sense of purpose and meaning will emerge.” ― Jonathan Haidt, The Happiness Hypothesis: Finding Modern Truth in Ancient Wisdom