Aspects of human nature - like our capacity for language, reasoning or emotions - are amenable to scientific analysis that looks at where they come from and how they work, using tools like evolutionary biology, genetics, or neuroscience. But not everything about us that is important is innate. Many deeply entrenched features and characteristics of human life are contingent not essential. They come from our human history, not our human biology. Such aspects of the human condition - like marriage, sports, and war - resist scientific analysis and must be studied in a more humanistic way.