This article deals with the polemic between William Whewell and John Stuart Mill, two majorthinkers of 19th century British moral thought. In his work, Lectures on the History of MoralPhilosophy in England, Whewell criticized Bentham and utilitarianism. Mill also wrote an articletitled "Whewell on Moral Philosophy" to answer these criticisms. Whewell generally accuses utili tarianism of evaluating actions on the basis of pleasure and pain and Bentham of building a moraltheory on pleasure and pain; Mill accuses Whewell of solving the relation between self-interestand duty by appealing to God, and of appealing to utilitarian reasons when generating justifica tions for the basic moral principles of his system. This polemic, in which both thinkers often applyrhetorical tricks, is a polemic in which opinions are supported by popular arguments rather thantechnical ones. In this polemic, Whewell's main purpose is to show that utilitarianism does nothave as strong foundations as it seems, while Mill's aim is to present that Whewell's criticismsare based on prejudices. In this context, based on the answers given, it can be said that Mill ismore successful than Whewell, which I think should not be accepted as the absolute defense ofboth theories.