Sankhya Darshan, one of the six classical schools of Indian philosophy, is centered on two fundamental principles:
• Prakriti: The unmanifested, primordial matter that is the source of all material creation.
• Purusha: The passive observer or pure consciousness, which is independent of Prakriti but interacts with it to manifest the universe.
The other options, Parmanu (atoms) and Pramaan (means of valid knowledge), are not considered fundamental elements of Sankhya philosophy.