Mill writes that “…when he begins to deduce from this precept [the Universal Law Test] any of the actual duties on morality, manages… to demonstrate that there would be no contradiction, no logical impossibility, in the adoption by all rational beings of the most scandalously immoral rules of conduct” (Troyer 97). In defending his moral theory, Mill provides an example similar to that of Kant, explaining how the principle of utility does not justify lying. Mill writes that “…it would often be expedient…to tell a lie. But because cultivating within us a sensitive feeling regarding truthfulness is one of the most useful... and because every deviation, even involuntary, from the truth contributes significantly to weakening the reliability of human assertions... [a person who lies] acts as one of their worst enemies” (Troyer 112). Mill's refusal to lie as the right course of action is based on the negative consequences that come with it