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

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.