Tom said to himself that it was not such a hollow world, after all. He had discovered a great law of human action, without knowing it — namely, that … - Mark Twain

" "

Tom said to himself that it was not such a hollow world, after all. He had discovered a great law of human action, without knowing it — namely, that in order to make a man or a boy covet a thing, it is only necessary to make the thing difficult to attain.