12. ... It is not _anima_, but what excels in _anima_ that is called _mens_, its head or eye, as it were. Whence man himself is called the image of God in respect to _mens_. However all those things are united to _anima_ so that it is one thing. The _anima_ has received different names according to the working of different causes. 13. ... When it gives life to the body, it is _anima_; when it wills,[328] it is _animus_; when it knows, it is _mens_; when it recollects, it is _memoria_; when it judges what is right, it is _ratio_; when it breathes, it is _spiritus_; when it is conscious of anything, it is _sensus_.... [328] _Vult._ 14. _Corpus_ is so called because being corrupted, it perishes. For it is perishable and mortal and must sometime be dissolved. 16. The body is made up of the four elements. For earth is in the flesh; air in the breath; moisture in the blood; fire in the vital heat. For the elements have each their own part in us, and something is due them when the structure is broken up.... 18. The bodily senses are five: sight, hearing, smell, taste, touch. Two of these open and close; two are always open. 56. The arteries are so named because the air, that is, the breath, is carried by them from the lungs; or because they retain the breath of life in their narrow and close passages, whence they emit the sounds of the voice, which would all sound alike if the movement of the tongue did not create differences of the voice. 77. _Lac_ (milk) derives its name from its color, because it is a white liquor, for the Greeks call white λεῦκος and its nature is changed from blood; for after the birth whatever blood has not yet been spent in the nourishing of the womb flows by a natural passage to the breasts, and whitening by their virtue, receives the quality of milk. 86. _Ossa_ (bones) are the solid parts of the body. For on these all form and strength depend. _Ossa_ are named from _ustus_ (burned), because they were burned by the ancients, or as others think, from _os_ (the mouth), because there they are visible, for everywhere else they are covered and concealed by the skin and flesh. 92. _Terga_, because it is on the back that we lie flat on the earth (_terra_); men alone can do this, for dumb animals lie either on the belly or on the side; whence the word _tergum_ is applied to them mistakenly. 108. The knees are the meeting-points of the thighs and lower legs; and they are called knees (_genua_) because in the womb they are opposite to the cheeks (_genae_). For they adhere to them there and they are akin to the eyes, the revealers of tears and of pity. For the knees (_genua_) are so called from the cheeks (_genae_).