This paper is an attempt to highlight the similarities and the differences in the concept of buddhi from the view of Āyurveda and Sahaj Marg- a refined Rāja Yoga. This subject is important not only for Āyurvedic physicians but also for the practitioners of Rāja Yoga (meditation), for nothing affects us individually more than our own buddhi (intellect). Metaphysics is concerned, first and foremost, with the nature of reality. The claims of science rest on observation perhaps from the laboratory whereas the claims of metaphysics do not. Its findings are result of the study rather than from the laboratory.