"I went to the woods because I wished to live deliberately, to front only the essential facts of life, and see if I could not learn what it had to teach, and not, when I came to die, discover that I had not lived."
Dense, incredibly difficult to parse, with a non-standard use of "front" as a verb and what seems to be a triple-negative. If I said that sentence to you, out loud, I doubt you would catch the meaning of it on the first pass. The book is filled with stuff like that.
That said, I really do want to get better at non-fiction writing, specifically technical writing, but I haven't found any good recommendations for "canonical" books on technical writing. If anyone can suggest a decent, pragmatic (as opposed to Strunk-and-White style prescriptivism) introduction to technical writing specifically, I'd appreciate it.