This document summarizes Amartya Sen's views on development thinking in the 21st century. Sen argues that development is not simply about switching from state-led to market-led views, but rather rejecting the "blood, sweat and tears" view of development in favor of expanding human freedom and capabilities. Development involves celebrating people's agency and cooperation. The market and human rights have a role to play, as do democratic values and political incentives that complement economic incentives. Ultimately, development requires a fuller view of human beings.