and the affectionate devotion with which this gift is received by finite intelligences from the hand of God is expressed in Art, when its infinite depth _can_ be so expressed at all, in a twofold language,-- the one objective, the other subjective; the one recalling the immediate source of the emotion, and presenting it palpably to the senses, arrayed in all the ineffable tenderness of Art, which is Love,--the other, portraying rather the emotion than the cause of it, and by an instinctive and universal symbolism expressing the deep and serious joy with which the "thing of beauty" is welcomed to the heart. Hence come those lines which aesthetic writers term "Lines of Beauty," so eloquent to us with an uncomprehended meaning,--so near, and yet so far,--so simple, and yet so mysterious,--so animated with life and thought and musical motion, and yet so still and serene and spiritual. Links which bind us fraternally to old intelligences, tendrils by which the soul climbs up to a wider view of the glimmering landscape, they are grateful and consoling to us. We look with cognizant eyes at their subtile affinities with some unexpressed part of human life, and, turning one to another, are apt to murmur, "We cannot understand: we love." The mysteries of orb and cycle, with which old astrologers girded human life, and sought to define from celestial phenomena the horoscope of man, have been brought down to modern applications by learned philosophers and mathematicians. These have labored with a godlike energy and skill to trace the interior relationships existing between the recondite revelations of their Geometry, their wonderful laws of mathematical harmonies and unities, and those lines which by common consent are understood to be exponential of certain phases of our own existence. No well-organized intellect can fail to perceive that a sublime and immortal Truth underlies these speculations. Undoubtedly, in the straight line, in the conic sections, in the innumerable composite curves of the mathematician, lie the germs of all these symbolic expressions. But the artist, whose lines of Beauty vary continually with the emotions which produce them, who feels in his own human heart the irresistible impulse which gives an exquisite balance and poise to those lines, cannot allow that the _spirit_ of his compositions is governed by the exact and rigid formula; of the philosopher to any greater extent or in any other manner than as the numbers of the poet are ruled by the grammar of his language. These formulae may be applied as a curious test to ascertain what strange sympathies there may be between such lines and the vast organic harmonies of Nature and the Universe; but they do not enter into the soul of their creation any more than the limitations of counterpoint and rhythm laid their incubus on the lyre of Apollo. The porches where Callicrates, Hermogenes, and Callimachus walked were