Hugo Black,
Hazel-Atlas Glass Company v. Hartford-Empire Company…
“ If relief on equitable grounds is to be obtained it is right that it should be sought by a formal suit upon adequate pleadings and should be granted only after a trial of issues according to the usual course of the trial of questions of fact. A court of first instance is the appropriate tribunal, and the only tribunal, equipped for such a trial. Appellate courts have neither the power nor the means to that end. ”
