Heartless selfish quotes are perfect for reminding the world that self-care isn’t selfish. People often become heartless or selfish due to experiences such as betrayal, loss, or hardship.

Q: I have a co-worker who thinks the world revolves around him. He monologues, guilt trips, and expects his wishes to be ...

But a selfish person will prefer to play with someone who behaves as they do," Bogdan said. "People really like others who are similar to themselves—to a shocking degree." ...

People treat generosity as all good and selfishness as all bad. It's more complicated than that. Still, pretending it's that simple can be a great way to grab what we want.

A person's own behavior is the primary driver of how they treat others during brief, zero-sum-game competitions, researchers report. Generous people tend to reward generous behavior and selfish ...