Metaphysics is Rationalistic

Every metaphysical theory in the history of philosophy is a rationalistic system. This is because metaphysical theories are established by reasoning, and they cannot be proved or disproved by perception and experimentation. They must be accepted or rejected on the basis of faith and arguments. In the Advaita Vedanta, the Upanishadic saying, “Sarvam khalvidam Brahman neha nanasti kinchana,” is used to argue about the falsity of the world and establish that nothing exists except the Brahman which is the supreme soul or the universal spirit, and the prime mover of the universe. This is a metaphysical position which cannot be proved or disproved—it has to be accepted or rejected on the basis of faith or arguments.