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Two alternatives then are before us. We must either follow the precept of the Lacedaemonian Agesilaus, who had no confidence in his personal appeannce and refused to allow his portrait to be painted or carved; or we must accept the universal custom of the rest of mankind which welcomes portraiture both in sculpture and painting. In the latter case, is there any reason for preferring to see one's portrait moulded in marble rather than reflected in silver, in a painting rather than in a mirror?

Or do you regard it as disgraceful to pay continual attention to one's own appearance? Is not Socrates said actually to have urged his followers frequently to consider their image in a glass, that so those of them that prided themselves on their appearance might above all else take care that they did no dishonour to the splendour of their body by the blackness of their hearts; while those who regarded themselves as less than handsome in personal appearance might take especial pains to conceal the meanness of their body by the glory of their virtue? You see; the wisest man of his day actually went so far as to use the mirror as an instrument of moral discipline. Again, who is ignorant of the fact that Demosthenes, the greatest master of the art of speaking, always practised pleading before a mirror as though before a professor of rhetoric? When that supreme orator had drained deep draughts of eloquence in the study of Plato the philosopher, and had learned all that could be learned of argumentation from the dialectician Eubulides, last of all he betook himself to a mirror to learn perfection of delivery. Which do you think should pay greatest attention to the decorousness of his appearance in the delivery of a speech? The orator when he wrangles with his opponent or the philosopher when he rebukes the vices of mankind? The man who harangues for a brief space before an audience of jurymen drawn by the chance of the lot, or he who is continually discoursing with all mankind for audience? The man who is quarrelling over the boundaries of lands, or he whose theme is the boundaries of good and evil?

Moreover there are other reasons why a philosopher should look into a mirror. He is not always concerned with the contemplation of his own likeness, he contemplates also the causes which produce that likeness. Is Epicurus right when he asserts that images proceed forth from us, as it were a kind of slough that continually streams from our bodies? These images when they strike anything smooth and solid are reflected by the shock and reversed in such wise as to give back an image turned to face its original. Or should we accept the view maintained by other philosophers that rays are emitted from our body? According to Plato these rays are filtered forth from the centre of our eyes and mingle and blend with the light of the world without us; according to Archytas they issue forth from us without any external support; according to the Stoics these rays are called into action by the tension of the air: all agree that, when these emanations strike any dense, smooth, and shining surface, they return to the surface from which they proceeded in such manner that the angle of incidence is equal to the angle of reflection, and as a result that which they approach and touch without the mirror is imaged within the mirror.