Hitherto, however, in the application of these expressions to the division of the different principles, and with them to the division of philosophy, a gross misuse of the terms has prevailed; for what is practical according to concepts of nature has been taken as identical with what is practical according to the concept of freedom, with the result that a division has been made under these heads of theoretical and practical, by which, in effect, there has been no division at all (seeing that both parts might have similar principles).