While looking at the Castor and Pollux of Rubens, I remembered what the biographers asserted of this most wonderful man--that he spoke fluently seven languages, besides being profoundly skilled in many sciences, and one of the most accomplished diplomatists of his time. Before he took up his palette in the morning, he was accustomed to read, or hear read, some fine passages out of the ancient poets; and thus releasing his soul from the trammels of low-thoughted care, he let her loose into the airy regions of imagination. What Goethe says of poets, must needs be applicable to painters. He says, "If we look only at the principal productions of a poet, and neglect to study himself, his character, and the circumstances with which he had to contend, we fall into a sort of atheism, which forgets the Creator in his creation." I think most people admire pictures in this sort of atheistical fashion; yet next to loving pictures, and all the pleasure they give, and revelling in all the feelings they awaken, all the new ideas with which they enrich our mental hoard--next to this, or equal with it, is the inexhaustible interest of studying the painter in his works. It is a lesson in human nature. Almost every picture (which is the production of mind) has an individual character, reflecting the predominant temperament--nay, sometimes, the occasional mood of the artist, its creator. Even portrait painters, renowned for their exact adherence to nature, will be found to have stamped upon their portraits a general and distinguishing character. There is, besides the physiognomy of the individual represented, the physiognomy, if I may so express myself, of the picture; detected at once by the mere connoisseur as a distinction of manner, style, execution: but of which the reflecting and philosophical observer might discover the key in the mind or life of the individual painter. In the heads of Titian, what subtlety of intellect mixed with sentiment and passion! In those of Velasquez, what chivalrous grandeur, what high-hearted contemplation! When Ribera painted a head--what power of sufferance! In those of Giorgione, what profound feeling! In those of Guido, what elysian grace! In those of Rubens what energy of intellect--what vigorous life! In those of Vandyke, what high-bred elegance! In those of Rembrandt, what intense individuality! Could Sir Joshua Reynolds have painted a vixen without giving her a touch of sentiment? Would not Sir Thomas Lawrence have given refinement to a cook-maid? I do believe that Opie would have made even a calf's head look sensible, as Gainsborough made our queen Charlotte look picturesque.