Nagarjuna rejects all metaphysical thinking.

".He rejects the creation of the world, whether by a God (Isvara) or by purusha, whether by time or by itself. He opposes attachment to all fixed concepts - of attributes, being as such, atoms, etc; he opposes the view that everything will be destroyed and the view that everything is eternal; he rejects the notion of the self."

"The metaphysics he has rejected is replaced by this logical thinking. Buddha's fundamental attitude, the rejection of ontological questions in favor of salvation and the truth necessary for this salvation, is carried to its logical conclusion. The earlier ontological speculation becomes a clarification through movements of thought which cancel each other out." [ Carl Jaspers, The Great Philosophers, Vol II, pg 425]