"When I met Borges some time ago and remarked that I was about to embark on writing a book about Schopenhauer, he became excited and started talked volubly about how much Schopenhauer had meant to him. It was the desire to read Schopenhauer in the original, he said, that had made him learn German; and when people asked him, which they often had, why he with his love of intricate structure had never attempted a systematic exposition of the world-view which underlay his writings, his reply was that he did not do it because it had already been done by Schopenhauer."
January 1, 1970
https://en.wikiquote.org/wiki/Arthur_Schopenhauer