In this paper I set out what I call a ‘conquest’ conception of Hume's experimental science of man. It is notable, I claim, that Hume regards what he calls the ‘capital’ of the sciences – ‘the science of MAN’ – as occupied territory, and that he views his ‘direct’ method of approach upon the science of human nature as a ‘conquest’. I expand upon such statements by leveraging the comparison that Hume draws between experimental moral philosophy and the experimental tradition (...) in natural philosophy inaugurated by Francis Bacon. Overall, I suggest that Hume's decision to ground his science of human nature upon experience and observation is as much about overthrowing the epistemic authority of speculative dogmas as it is about establishing a secure foundation for his system of the sciences, and I contend that Hume's application of his hypotheses to animals is central to this conception of his philosophical project in the Treatise. (shrink)