Dean Allen for A List Apart, way back in 2001:
Designers will benefit from [approaching] their work now and again as being written rather than assembled.
Later in the article, he recounts a typography class he taught:
To the students, text had been handled as a graphic element, to be shifted within grids, manipulated and filtered like a photo, to be squinted at and scrutinized upon critique but never apparently to be read. “But editors take care of text, we just have to design it” was the response when I’d insist that designers learn about editorial style and usage, which always made me laugh.
Reading design helps you make it to measure.