Steve McIntosh is already a regular guest on this podcast, and that’s no accident. Steve and I have been collaborating for many years, and we even cofounded the Institute for Cultural Evolution almost a decade ago. Steve is the President of the think tank and continues to build it, even as he releases important intellectual content, including his writings, books, talks, various podcast appearances. The subject of this dialogue is a significant one—it’s on human nature. Does it evolve? Or is it fixed? And how do we think about the evolution of self and culture, given our biological constraints? Since this conversation was recorded, Steve has also posted an article on the same subject, with the same title Does Human Nature Evolve? which can be found in here. I’m thrilled to have Steve back on the podcast to explore one of the most foundational questions in philosophy, psychology, and even spirituality.