"The first lesson of history," says Emerson, "is the good of evil. Good is a good doctor, but Bad is sometimes a better. 'Tis the oppressions of William the Norman, savage forest-laws, and crushing despotism, that made possible the inspirations of Magna Charta under John. Edward I. wanted money, armies, castles, and as much as he could get. It was necessary to call the people together by shorter, swifter ways,--and the House of Commons arose. To obtain subsidies, he paid in privileges. In the twenty-fourth year of his reign he decreed, 'that no tax should be levied without consent of Lords and Commons;' which is the basis of the English Constitution. Plutarch affirms that the cruel wars which followed the march of Alexander, introduced the civility, language, and arts of Greece into the savage East; introduced marriage; built seventy cities; and united hostile nations under one government. The barbarians who broke up the Roman empire did not arrive a day too soon. Schiller says, the Thirty Years' War made Germany a nation. Rough, selfish despots serve man immensely, as Henry VIII. in the contest with the pope; as the infatuations no less than the wisdom of Cromwell; as the ferocity of the Russian czars; as the fanaticism of the French regicides of 1789. The frost which kills the harvest of a year, saves the harvests of a century, by destroying the weevil or the locust. Wars, fires, plagues, break up immovable routine, clear the ground of rotten races, and dens of distemper, and open a fair field to new men. There is a tendency in things to right themselves, and the war or revolution or bankruptcy that shatters a rotten system, allows things to take a new and natural order." "Steam was, till the other day, the devil which we dreaded. Every pot made by any human potter or brazier had a hole in its cover, to let off the enemy, lest he should lift pot and roof, and carry the house away. But the Marquis of Worcester, Watt, and Fulton bethought themselves, that, where was power, was not devil, but was God; that it must be availed of, and not by any means let off and wasted. Could he lift pots and roofs so handily? he was the workman they were in search of."