At different periods dogmatical belief is more or less abundant. It arises in different ways, and it may change its object or its form; but under no circumstances will dogmatical belief cease to exist, or, in other words, men will never cease to entertain some implicit opinions without trying them by actual discussion. If everyone undertook to form his own opinions and to seek for truth by isolated paths struck out by himself alone, it is not to be supposed that any considerable number of men would ever unite in any common belief. But obviously without such common belief n............