Opinion Journal has yet another tribute to the sci-fi master.

Bemoaning the state of U.S. education in the 1970s, he wrote that “the three-legged stool of understanding is held up by history, languages and mathematics . . . if you lack any one of them you are just another ignorant peasant with dung on your boots.” Heinlein was certainly no ignorant peasant.

I wonder if his first draft really used “dung”?