There are wise people who talk ever so knowingly and complacently about "the working classes," and satisfy themselves that a day's hard intellectual work is very much harder than a day's hard manual toil, and is righteously entitled to much bigger pay. Why, they really think that, you know, because they know all about the one, but haven't tried the other. But I know all about both; and so far as I am concerned, there isn't money enough in the universe to hire me to swing a pickaxe thirty days, but I will do the hardest kind of intellectual work for just as near nothing as you can cipher it down—and I will be satisfied, too.
-Mark Twain