Fred M. Vinson,
Alabama Public Service Commission v…
“ Equity by its very nature denies relief if, on balance of considerations of convenience relevant to equity, it would be inequitable to grant the extraordinary remedy of an injunction. Federal courts of equity have always acted on this equitable doctrine. But it was never a doctrine of equity that a federal court should exercise its judicial discretion to dismiss a suit merely because a State court could entertain it. ”
