Doubtless it was not a very dissimilar motive which gained him entrance into the women's bath at Nuremberg, for we see he must have been there by the beautiful pen drawing at Bremen and the slighter one of the same subject at Chatsworth. These drawings may also illustrate what in his book on the Proportion he calls the words of difference--stout, lean, short, tall, &c. (see p. 285), as he would seem to have chosen types as various as possible, ranging from the human sow to the slim and dignified beauty. In the same spirit he studied perspective and the art of measuring; he felt the importance to art of inquiry in these directions; nevertheless, to seize the beautiful elements in nature was ever the object of his efforts, however, roundabout they may sometimes appear to us. "The sight of a fine human figure is above all things the most pleasing to us, wherefore I will first construct the right proportions of a man." (See p. 321.) His aesthetic curiosity had nothing in common with that which considers all objects and appearances as equally interesting. What he meant by Nature, when he bid the artist have continual recourse to her, was far from being the momentary and accidental appearance of any thing or things anywhere,--which the modern "student of Nature" admires because he has neither sufficient force of character to prefer, nor sufficient right feeling to defer to the preferences of those who have more. Leonardo's natural history is delightful reading, because it combines such fantastic and inventive fables as surpass even the happiest efforts of our nonsense writers with a beautiful openness of mind which we see oftener in children than in sages,--which is, in fact, the seriousness of those who are truly learning, and are not too conscious of what has already been learnt. As a boy adds to the pleasure he has in adventuring further and further into a cave the delight of awesome supposition--for what may not the next turn reveal?--and is pleased to feel all his young machinery ready instantly to enact a panic if his torch should blow out, and laughs at each furtive rehearsal of his own terror in which he indulges;--so the Humanists turned from astronomy to astrology, and used their skill in mathematics to play with horoscopes which they more than half believed might bite. There was just enough doubt as to whether any given wonder was a miracle to make it interesting; and at any moment the pall of superstition might stifle the flickering light of inquiry, as we feel was the case when Dürer writes: