 As we saw above, Alexander argues that humans construct values in response to certain needs or instincts. The final part of Beauty and Other Forms of Value identifies the animal origin of our supreme values. For example, there is an analogy to be drawn between the social impulse in humans and in bees. “Naturalism and Value” explains that in the same way that bees’ instinct for finding honey once seemed to be “magical” and yet has been explained by biology in naturalistic terms, similarly values appear to be magical and yet can be explained naturally (Alexander 1939: 282). He goes on to argue that Darwin’s theory of evolution plays an important role in the development of value: