Kant’s Rational Empiricism: His R.E. is the combination of Rationalism of Rene Descartes and Empiricism of John Locke and David Hume. Kant argues true knowledge is more than simply a blank tablet, as Descartes suggest it as tabula rasa, that received information from our external sense experience. It also processes the data that is received from our sense experience and classifies them accordingly to their categories in the mind which he believes to be innate and inherent.