Переведите на русский:We must not think that because the ancients had difficulty in making iron they could not make good iron. The fact is that their product was as good as, and even better than, most of the iron we have today. The stories are true of the splendid shining swords of ancient heroes. We have learned merely how to make iron more easily and more cheaply. The principle of iron-making has always been the same, whether it was in Central Africa or Rome, in the time of George Washington or Andrew Carnegie; hot fire smelts the iron out of the ore.