That's a famous line in Federalist No. 51, generally attributed to James Madison—but not quite. The line is actually, in context, But the great security against a gradual concentration of the several ...

(CNN) — It is one of the most inspiring photographs in modern history, one that reveals the worst and best of human nature with a click of a camera shutter. It is a black-and-white image of a crowd of ...

SUMMARY: Christmas cheer may be hard to measure, but its impact is widespread. It's pretty tough to quantify holiday spirit. It's not something you can actually count or measure. But there are some ...

Dr. Gray is a social psychologist and the author of the forthcoming book “Outraged: Why We Fight About Morality and Politics and How to Find Common Ground,” from which this essay is adapted. One day ...

What is human nature? This is a question that has perplexed philosophers and psychologists throughout the ages. Are people essentially socially constructive and altruistic or are they destructive and ...