There is no stronger incentive to noble deeds and an upright life than the lives of the great and the good of all ages. It was mainly under the impulse of this belief that Plutarch compiled his parallel biographies. In the nature of the case their value as truthful records is greatly impaired by the standpoint from which they were written; but it is this fact that has given them an attractiveness and a currency such as no other works of their kind have equalled. Plutarch’s Lives have for centuries been the monitors of youth and the solace of the aged. They have been read and admired wherever men have honored courage, fortitude, intrepidity, self-control, patriotism, humaneness—in short, every trait of character that can be classed among the virtues. Greeks and Romans, ancients and moderns, learned and illiterate, rich and poor, have been fascinated by them, and it is on them that their author’s fame chiefly rests. To many persons, in fact to the great majority of readers, Plutarch is known only as the writer of charming biographies; yet these constitute a good deal less than half his extant works. Plutarch holds that men find the path of virtue and continue to walk in it, by reflection, deliberation, introspection; by a systematic, rigid and continued self-examination—in other words, by a practical application of the methods that philosophy points out. Man is sane and sound only so long as he puts into practice the principles of virtue. So long as he is the slave of his passions he is in need of a physician. Philosophy is the sanitation of the soul; the genuine philosopher is the real physician of the soul. In pursuance of his chosen vocation, Plutarch wrote a number of essays for the purpose of giving instruction upon the best methods of controlling the different passions to which men are subject. Their purport easily becomes evident from a glance at their titles. They show that he has carefully observed and studied men, at least those that constitute the various higher classes and give the prevailing tone to society. Many of these essays are still of interest and well repay perusal. They contain many acute observations and piquant remarks.