text: Then Aristotle proceeds and concludes that the actuality is prior to potentiality in formula, in time and in substantiality.With this definition of the particular substance (i.e., matter and form), Aristotle tries to solve the problem of the unity of the beings, for example, "what is it that makes a man one"?Since, according to Plato there are two Ideas: animal and biped, how then is man a unity?However, according to Aristotle, the potential being (matter) and the actual one (form) are one and the same.Epistemology Aristotle's immanent realism means his epistemology is based on the study of things that exist or happen in the world, and rises to knowledge of the universal, whereas for Plato epistemology begins with knowledge of universal Forms (or ideas) and descends to knowledge of particular imitations of these.Aristotle uses induction from examples alongside deduction, whereas Plato relies on deduction from a priori principles.Natural philosophy Aristotle's "natural philosophy" spans a wide range of natural phenomena including those now covered by physics, biology and other natural sciences.In Aristotle's terminology, "natural philosophy" is a branch of philosophy examining the phenomena of the natural world, and includes fields that would be regarded today as physics, biology and other natural sciences.Aristotle's work encompassed virtually all facets of intellectual inquiry.Aristotle makes philosophy in the broad sense coextensive with reasoning, which he also would describe as "science".However, his use of the term science carries a different meaning than that covered by the term "scientific method".For Aristotle, "all science (dianoia) is either practical, poetical or theoretical" (Metaphysics 1025b25).His practical science includes ethics and politics; his poetical science means the study of fine arts including poetry; his theoretical science covers physics, mathematics and metaphysics.