To know the Absolute Truth is not possible by our present senses. That is also another fact. Because at the present moment we have got materially affected... Not material senses. Our senses are originally spiritual, but it is covered by material contamination. Therefore the process is to purify, to purify the coverings of our material existence. And that is also recommended -simply by service attitude. Sevonmukhe hi jihvadau svayam eva sphuraty adah [Brs. 1.2.234]. The whole thing depends on our surrendering process and engage ourselves in the service of the Lord. Then gradually, the Lord reveals to the devotee. That is the process.
Letter to Purusottama, 19 June, 1968