 Although Hume’s more conservative contemporaries denounced his writings as works of scepticism and atheism, his influence is evident in the moral philosophy and economic writings of his close friend Adam Smith. Kant reported that Hume’s work woke him from his “dogmatic slumbers”  and Jeremy Bentham remarked that reading Hume “caused the scales to fall” from his eyes.   Charles Darwin regarded his work as a central influence on the theory of evolution. The diverse directions in which these writers took what they gleaned from reading him reflect both the richness of their sources and the wide range of his empiricism. Today, philosophers recognize Hume as a thoroughgoing exponent of philosophical naturalism, as a precursor of contemporary cognitive science, and as the inspiration for several of the most significant types of ethical theory developed in contemporary moral philosophy.