Agreed. I think also reducing the line-height from 175% at that width/font-size might make it a bit more readable ... thinking 125% looks easier on the eyes on my Mac @ 100% zoom + rgb(199, 199, 199)
The measure of his paragraphs is around 90 characters. At that length, 125% line-spacing is way to tight for good readability. I would go 150% at a minimum. The line spacing looks a little sparse at 175%, but it remains very readable.
