افتح عقلك لما سأكشفه لك، واحتفظ به في داخلك؛ فمن يسمع ولا يحفظ ما سمعه لا يتعلّم شيئًا.

“Open your mind to what I shall disclose, and hold it fast within you; he who hears, but does not hold what he has heard, learns nothing. Beatrice - Canto V 40-42”Dante Alighieri