Descartes' brief rules for the direction of the mind [1] is pertinent here, as it articulates beautifully what it means to do "thinking" and how that relates to "memory".

Concepts have to be "internalized" into intuition for much of our thinking, and if they are externalized, we become a meme-copy machine as opposed to a thinking machine.

[1] https://en.wikipedia.org/wiki/Rules_for_the_Direction_of_the...