This week, two of Donald Trump’s top advisers, H. R. McMaster and Gary Cohn, wrote the following passage in The Wall Street Journal: “The president embarked on his first foreign trip with a cleareyed outlook that the world is not a ‘global community’ but an arena where nations, nongovernmental actors and businesses engage and compete for advantage.”

That sentence is the epitome of the Trump project. It asserts that selfishness is the sole driver of human affairs. It grows out of a worldview that life is a competitive struggle for gain. It implies that cooperative communities are hypocritical covers for the selfish jockeying underneath.

The essay explains why the Trump people are suspicious of any cooperative global arrangement, like NATO and the various trade agreements. It helps explain why Trump pulled out of the Paris global-warming accord. This essay explains why Trump gravitates toward leaders like Vladimir Putin, the Saudi princes and various global strongmen: They share his core worldview that life is nakedly a selfish struggle for money and dominance.

It explains why people in the Trump White House are so savage to one another. Far from being a band of brothers, their world is a vicious arena where staffers compete for advantage.