No account of human behavior is complete without the awareness of death

Evidence

In the course of this book, we will show how this fear contributes to human behavior far more than most of us realize. In fact, it drives us so much that any effort to address the question “What makes people act the way they do?” is profoundly inadequate if it doesn’t include the awareness of death as a central factor. — Sheldon Solomon, Jeff Greenberg, Tom Pyszczynski, The Worm at the Core, 29