Let's take a look at the 25th variation of the second part. Here Bach meets us in his highest and deepest personal and human form: it's like in the Art of Fugue in the unfinished fugue No. 20, where Bach confronts us with his personal signature. It was he himself, who, after he had been occupied during his whole life with symbols, with numbers, with the mastering of structural and formal problems and renewals, now he saw himself confronted with a personal view into mirror. He now shows us a human being in his whole conception of life. The composer of Come, oh sweet death now is confessing, Oh sweet death, how bitter is your prickle.

Talkings on Bach