Watts advocated not just listening to lectures but taking detailed notes, then reworking the notes themselves-all of this imprinting the knowledge deeper in the brain. Faraday would take this even further.

Attending the lectures of the popular scientist John Tatum, each week on a different subject, he would note down the most important words and concepts, quickly sketch out the various instruments Tatum used, and diagram the experiments. Over the next few days he would expand the notes into sentences, and then into an entire chapter on the subject, elaborately sketched and narrated.

Excellent example of “active” learning. Taking notes is the first step. Reviewing and reorganizing the notes is the alpha.

As read from Mastery, by Robert Greene

Greene, Robert. Mastery. United States, Penguin Publishing Group, 2012. pg97