If we can prove that life comes from life, or the soul is from the supper soul, then all other things can be brought into serious consideration. So you try to prove that chemical combination can never bring about life, this is our main argument. If we can prove this particular subject matter, that the soul cannot be manufactured by combination of chemicals, then gradually we can prove that vedic knowledge is perfect, while other sources of knowledge by speculation and imagination are all wrong.
Letter to Svarupa Damodara Prabhu, 17 December, 1975