PERSONAL POWER.--The progress of society has been inseparably connected with the agency of eminent persons. Signal changes, whether wholesome or mischievous, are linked to the names of individuals who have specially contributed to bring them to pass. The achievements of heroes stand out in as bold relief in authentic history as in the obscure era of myth and fable. Fruitful inventions, after the earlier steps in civilization are taken, are traceable to particular authors, exalted by their genius above the common level. So it is with the literary works which have exerted the deepest and most lasting influence. Nations have their pilots in war and in peace. Epochs in the progress of the fine arts are ushered in by individuals of surpassing mental power. Reforms and revolutions, which alter the direction of the historic stream, emanate from individuals in whose minds they are conceived, and by whose energy they are effected. The force thus exerted by the leaders in history is not accounted for by reference to general laws. Great men are not puppets moved by the spirit of the time. To be sure, there must be a preparation for them, and a groundwork of sympathy among their contemporaries: otherwise their activity would call forth no response. Independently of the age that gives them birth, their power would lose its distinctive form and hue: they would be incapable of influence. _Cromwell_ would not have been Cromwell had he been born in any other period of English history. Nor could he have played his part, being what he was, had not the religious and political struggles of England for generations framed a theater adapted to his talents and character. _Michael Angelo_ could not have arisen in a half-civilized tribe. His creative power would have found no field in a society rude, and blind to the attractions of art. Nevertheless, his power _was_ creative. Cromwell and Michael Angelo, and such as they, are not the passive organs, the mere outcome, of the communities in which they appear. Without the original thought and personal energy of leaders, momentous changes in the life of nations could never have taken place. A great man may be obliged to wait long for the answering sympathy which is required to give effect to his thoughts and purposes. Such a mind is said to be in advance of the age. Another generation may have to appear before the harvest springs from the seed that he has sown. Moreover, it is not true that great men, efficient leaders, come forward whenever there is an exigency calling for them, or an urgent need. Rather is it true that terrible disasters sometimes occur, at critical points in history, just for the lack of leaders fit for the emergency.