We argue about ethics passionately as a species: racial and sexual discrimination, war, the killing of innocents, slavery. At the same time, modern society increasingly treats physical science as the only route to true knowledge, which leaves every non‑physical framework sitting in the opinion pile. Out of that combination comes naturalistic ethics, the attempt to derive morality from naturalistic evolution with no need for God or anything immaterial.
This paper asks a simple question with large consequences: does naturalistic ethics actually build a good case?
I run the test on two fronts. The experiential one looks at animal behaviour and at what introspection shows about how we ourselves reach moral decisions. The logical one asks whether a naturalistic theory can support objective ethics at all, then traces where naturalism leads, including its inability to tell us how we ought to act in future and the way it eventually undermines the possibility of knowledge.
Naturalistic ethics fails on both fronts. Working through R. Scott Smith, Greg Koukl, and Michael Ruse, and taking their strongest arguments rather than convenient versions of them, the paper makes a positive case: accounting for the non‑natural and immaterial is the more reasonable position for anyone who wants to keep hold of knowledge, truth, and ethics at all.