<P> Aristotle introduced what may be called a scientific method . His demonstration method is found in Posterior Analytics . He provided another of the ingredients of scientific tradition: empiricism . For Aristotle, universal truths can be known from particular things via induction . To some extent then, Aristotle reconciles abstract thought with observation, although it would be a mistake to imply that Aristotelian science is empirical in form . Indeed, Aristotle did not accept that knowledge acquired by induction could rightly be counted as scientific knowledge . Nevertheless, induction was for him a necessary preliminary to the main business of scientific enquiry, providing the primary premises required for scientific demonstrations . </P> <P> Aristotle largely ignored inductive reasoning in his treatment of scientific enquiry . To make it clear why this is so, consider this statement in the Posterior Analytics: </P> <P> We suppose ourselves to possess unqualified scientific knowledge of a thing, as opposed to knowing it in the accidental way in which the sophist knows, when we think that we know the cause on which the fact depends, as the cause of that fact and of no other, and, further, that the fact could not be other than it is . </P> <P> It was therefore the work of the philosopher to demonstrate universal truths and to discover their causes . While induction was sufficient for discovering universals by generalization, it did not succeed in identifying causes . For this task Aristotle used the tool of deductive reasoning in the form of syllogisms . Using the syllogism, scientists could infer new universal truths from those already established . </P>

Who is usually credited with popularizing the scientific method