Editor’s Note: This article previously appeared in a different format as part of The Atlantic’s Notes section, retired in 2021.

Below are the best quotes we heard from our sources today. (Follow the links to read the full stories.)

Stephen Garcia, a professor of psychology at the University of Michigan: “Any time you create a scale or a dimension that’s measurable, you also create a kind of competition.”

Seth Prins, a doctoral student in epidemiology at Columbia University’s Mailman School of Public Health: “Employees in the middle have dual roles that embody aspects of ownership and front-line labor, without the full benefits of being one or the other—they get flak from above and below.”

Yanis Varoufakis, the former finance minister of Greece (pictured above, by Alkis Konstantinidis/Reuters): “We need to grasp the difference between saying that Greece, and other countries, should not have entered the euro zone, and saying now that we should now exit. Put technically, we have a case of hysteresis: Once a nation has taken the path into the euro zone, that path disappeared after the euro’s creation, and any attempt to reverse along that now-nonexistent path could lead to a great fall off a tall cliff.”