Slow learner

I. It was only last year, I think, that I caught the pun in T Cooper's Some of the Parts. As in "sum" of the parts!

II. I probably already mentioned this but it was only upon reaching the end—I think literally the very last page—of Carl Wilson's book on Céline Dion, Let's Talk About Love: A Journey to the End of Taste, that it hit me: the subtitle was a play on namesake Céline's Journey to the End of Night!