Who said The best way to become acquainted with a subject is write book about it?

The quote "The best way to become acquainted with a subject is to write a book about it" is often attributed to Arthur Schopenhauer.

However, there is no definitive evidence that he actually said it. It is likely a paraphrased version of a statement he made, or a quote mistakenly attributed to him.

While Schopenhauer did value writing as a means of understanding and exploring ideas, the exact quote in this form doesn't appear in his known works.