Idem. p. 177.
CHAPTER V
NATURE
I
We regard a form and figure out of nature with more pleasure than another, though the thing in itself is not necessarily altogether better or worse.
Life in nature showeth forth the truth of these things (the words of difference--i.e., the character of bodily habit to which they refer), wherefore regard it well, order thyself thereby and depart not from nature in thine opinions, neither imagine of thyself to invent aught better, else shalt thou be led astray, for art standeth firmly fixed in nature, and whoso can rend her forth thence he only possesseth her. If thou acquirest her, she will remove many faults for thee from thy work.
Neither must the figure be made youthful before and old behind, or contrariwise; for that unto which nature is opposed is bad. Hence it followeth that each figure should be of one kind alone throughout, either young or old, or middle-aged, or lean or fat, or soft or hard.
The more closely thy work abideth by life in its form, so much the better will it appear; and this is true. Wherefore never more imagine that thou either canst or shalt make anything better than God hath given power to His creatures to do. For thy power is weakness compared to God's creating hand. (See continuation of passage, p. 10.)