Louis Brandeis, Marr v. United States — Opinion of the Court
“ The government insists that identity of the business enterprise is not conclusive; that gain in value resulting from profits is taxable as income, not only when it is represented by an interest in a different business enterprise or property, but also when it is represented by an essentially different interest in the same business enterprise or property; that, in the case at bar, the gain actually made is represented by securities with essentially different characteristics in an essentially different corporation ”
