The spirit soul is impossible to find out by materialistic scientific means, but if one will hear from the right authority, he may understand. The gentleman is disappointed that probably no one will ever know about spirit, but this is not true. We know what is spirit, how does it work, how does it transmigrate from one body to another or from one planet to another. We know these very scientifically, and we are firmly convinced about it. We can refute any dogmatic arguments against this conviction, and how do we do that? Simply because we start our understanding from the data of authoritative sources like Krishna or His representative.
Letter to Govinda Dasi, 10 February, 1969