On the other hand, the learned counsel for the petitioner strongly contended that the expression "procedure established by law" is used in a much wider sense and approximates in meaning to the expres sion "due process of law" as interpreted by the Supreme COurt of America in the earliest times and, if that is so, it means exactly what some of the American writers mean to convey by the expression "procedural due process." In the course of the arguments, the learned Attorney General referred us to the proceedings in the Constituent Assembly for the purpose of showing that the article as originally drafted contained the words "without due process of law" but these words were subsequently replaced by the words "except according to procedure established by law." In my opinion, though the proceedings or discussions in the Assembly are not relevant for the purpose of construing the meaning of the expressions used in article 21, especially when they are plain and unambiguous, they are relevant to show that the Assembly intended to avoid the use of the expression "without due process of law.