I am verily That which has to be known by all the Vedas; I am indeed the author of the Vedanta and the knower of the Vedas am I. Therefore, with regard to all the creatures, mattah, from Me, from the Self; are Smrtih, memory; jnanam, knowledge; and their apohanam, loss. The knowledge and memory of these creatures who perform good deeds come from Me in accordance with the good deeds; similarly, the loss, deterioration, of memory and knowledge of those who perform evil deeds comes from Me in accordance with the evil deeds.
English Translation of Sanskrit Commentary By Sri Shankaracharya's
English Translation - Swami Gambirananda
Collaborate with us to invoke and fully manifest Srila Prabhupada's Vani-presence. Expressions researched: "By all the Vedas, I am to be known" "I am seated in everyone's heart" "I am situated in everyone's heart" "I am the compiler of Vedanta" "I am the knower of the Vedas" "from Me come remembrance, knowledge and forgetfulness" "mattah smrtir jnanam apohanam ca" "sarvasya caham hrdi sannivistah" "sarvasya caham hrdi sannivisto" "vedais ca sarvair aham eva vedyah" "vedais ca sarvair aham eva vedyo" "vedanta-krd veda-vid eva caham". We should not forget. He is giving direction.
From Me are memory, knowledge and their loss. I alone am the object to be known through all the Vedas; I am also the originator of the Vedanta, and I Myself am the knower of the Vedas. So the Srutis declare in the following texts: Entering within, He is the ruler of all things and the Self of all Tai. The Smrtis also declare thus: Visnu is the ruler of the whole universe, who permeates the universe V. Therefore, the memory of all beings springs from Me alone. Memory is knowledge springing from experience and its subtle impressions. They have for their contents past experiences. Knowledge is determination of a thing through the senses, inference, the scriptures and intuitive meditation. This is also from Me. So does Apohana too.
BG In this verse, Lord Shree Krishna says that He has bestowed upon us this amazing ability of memory and knowledge. While the mind and the intellect are like software; the brain can be considered hardware. Yet this mechanism of the brain is way beyond human understanding. For example, surgeons who perform brain transplant get delighted with their feat; but do not fully understand its functions. Another example is of face-recognition technology. How amazing it is that while the scanner software finds it difficult to read even typewritten text; humans can read even sketchy handwritings, without much effort. Such are the mysteries of the human brain which the Supreme Lord has created.