And what makes this so invaluable is that his greatness depends really less upon artistic qualities than upon his being a highly gifted man who understands the spirit of others. It is not merely artistic technique that is essential in a portrait, but before everything a psychical grasp of the subject. No artist, says Lessing, is able to interpret a power more highly spiritual than that which he possesses himself. And this is precisely the weak side in so many portrait painters, since a man's art is by no means always in any direct relationship with the development of his spiritual powers. In this respect a portrait of Bismarck by Lenbach stands to one by Anton von Werner, as an interpretation of Goethe by Hehn stands to one by Düntzer. To speak of the congenial conception in Lenbach's pictures of Bismarck is a safe phrase. There will always remain something wanting, but since Lenbach's works are in existence one knows, at any rate, that this something can be reduced to a far lower measure than it has been by the other Bismarck portraits. "_Bien comprendre son homme_," says Bürger-Thoré, "_est la première qualité du portraitiste_," and this faculty of the gifted psychologist has made Lenbach the historian elect of a great period, the active recorder of a mighty era. It even makes him seem greater than most foreign portrait painters. How solid, but at the same time how matter-of-fact, does Bonnat seem by Lenbach's side! One should not look at a dozen Bonnats together; a single one arrests attention by the plastic treatment of the person, but if you see several at the same time all the figures have this same plastic character, all of them have the same pose, and they all seem to have employed the same tailor. Lenbach has no need of all that characterisation by means of accessories in which Bonnat delights. He only paints the eyes with thoroughness, and possibly the head; but these he renders with a psychological absorption which is only to be found amongst modern artists, perhaps in Watts. In a head by Lenbach there glows a pair of eyes which burn themselves into you. The countenance, which is the first zone around them, is more or less--generally less--amplified; the second zone, the dress and hands, is either still less amplified, or scarcely amplified at all. The portrait is then harmonised in a neutral tone which renders the lack of finish less obvious. In this sketchy treatment and in his striking subjectivity Lenbach is the very opposite of the old masters. Holbein, and even Rubens--who otherwise sets upon everything the stamp of his own personality--characterised their figures by a reverent imitation of every trait given in nature. They produced, as it were, real documents, and left it to the spectator to interpret them in his own way. [Illustration: LENBACH. THE SHEPHERD BOY.]