The process of learning requires not only hearing and applying but also forgetting and then remembering again.

But the thing about remembering is that you don't forget.

I remember getting out of the cab and hearing an incredibly loud whistle,

We seem to live in a world where forgetting and oblivion are an industry in themselves and very, very few people are remotely interested or aware of their own recent history, much less their neighbors'. I tend to think we are what we remember, what we know. The less we remember, the less we know about ourselves, the less we are. (Interview with Three Monkeys Online, October 2008)

Take without forgetting, and give without remembering.

In the practical use of our intellect, forgetting is as important as remembering.