Edward Douglass White, Knowlton v. Moore — Opinion of the Court
“ Taxation is eminently practical, and is, in fact, brought to every man's door, and for the purpose of deciding upon its validity a tax should be regarded in its actual, practical results, rather than with reference to those theoretical or abstract ideas whose correctness is the subject of dispute and contradiction among those who are experts in the science of political economy.'Concluding, then that the tax under consideration is not direct within the meaning of the Constitution, but, on the contrary, is a duty or excise, we are brought to consider the question of uniformity. ”
