Today is the second episode of our special 3-part series covering all things masculinity.

Dr. Robert Sapolsky, a critically acclaimed author and professor of biology, neurology, and neurosurgery at Stanford University, joins Scott to discuss the contradictions in human behavior, as well as the common misconceptions surrounding testosterone and estrogen, specifically how these hormones relate to aggressive behavior. They also get into the concept of free will, including how the understanding of limited free will can influence one’s approach to parenting.