Probably the finest travel book ever written by an American is Walden, though Thoreau only went a mile out of town. - William Zinsser

Writing is hard work. A clear sentence is no accident. Very few sentences come out right the first time, or even the third time. Remember this in moments of despair. If you find that writing is hard, it’s because it is hard.

Nonfiction writing should always have a point: It should leave the reader with a set of facts, or an idea, or a point of view, that he didn’t have before he started reading.

"Writing can be taught or learned in the vacuum. We must say to students in every area of knowledge: "This is a how other people have written about this subject. Read it; study it; think about it. You can do it too.