If our goal is to understand the world, to seek a deeper understanding of the world, our general lack of moral diversity here is going to make it harder. Because when people all share values, when people all share morals, they become a team.

Source:

"The Moral Roots of Liberals and Conservatives." TED2008. Mar. 2008. Conference Presentation.

Additional Information:

This quote means that when a society lacks moral diversity -- when most people share the same moral values -- then people's understanding of the world becomes very shallow. When everyone believes the same thing, there is opposition to new ideas and different ways of thinking.

The quote is from the 2008 TED Talk of psychologist Jonathan Haidt about how conservative values differ from liberal values.

Watch the full TED Talk here: Jonathan Haidt - The Moral Roots of Liberals and Conservatives