Frank A. Fetter,
Economics Volume II: Modern Economic Problems
“ It is only in a loose sense that one can speak of the tax "system" of any state, made up as it is of so many diverse elements, each used to tap in some independent way some source of private income for public purposes. Every tax "system" has grown up more or less accidentally, guided by no more of a general principle than the advice of the cynical old statesman—so to pluck the feathers of the goose that it will squawk as little as possible. ”
