William O. Douglas,
United Ates v. Skelly Oil Company…
“ If we were trained in the art and science of taxation, we might serve a useful function. But taxation is a specialty in which we have only sporadic and no continuous experience. It has been said that one of our decisions is like a 'lightning bolt' that 'illuminates only a very small portion of the landscape,' leaving a darkness that later decisions do not remove. ”
