The System of the Vedanta according to Badarayana's Brahma-Sutras and Cankara's Commentary c5.s2.t1.2

c5.s2.t1.2

The thought that the empirical view of nature is not able to lead us to a final solution of the being of things, meets us not only among the Indians but also in many forms in the philosophy of the west. More closely examined this thought is even the root of all metaphysics, so far as without it no metaphysics can come into being or exist. For if empirical or physical investigation were able to throw open to us the true and innermost being of nature, we should only have to continue along this path in order to come at last to an understanding of all truth; the final result would be PHYSICS (in the broader sense, as the teaching of φύσις, nature), and there would be no ground or justification for METAPHYSICS. If, therefore, the metaphysicians of ancient and modern times, dissatisfied with empirical knowledge, went on to metaphysics, this step is only to be explained by a more or less clear consciousness that all empirical investigation and knowledge amounts in the end only to a great deception grounded in the nature of our knowing faculties, to open our eyes to which is the task of metaphysics.