"The thought of the Gita is not pure Monism although it sees in one unchanging, pure, eternal Self, the foundation of all cosmic existence , nor Mayavada, although it speaks of the Maya of the three modes of Prakriti omnipresent in the created world; nor is it Qualified Monism although it places in the One his eternal supreme Prakriti manifested in the form of Jiva and lays most stress on dwelling in cold and heat, in God rather than in dissolution as the supreme state of spiritual consciousness; nor is it Sankhya, although it explains the created world by the double principle of Purusha and Prakriti."
January 1, 1970
https://en.wikiquote.org/wiki/Prakriti