Meteorology   

softness, and the rest of them: all of which are derived from the

hot and the cold and the mixture of their motions. But no one would go

as far as to consider them sufficient in the case of the

non-homogeneous parts (like the head, the hand, or the foot) which

these homogeneous parts go to make up. Cold and heat and their

motion would be admitted to account for the formation of copper or

silver, but not for that of a saw, a bowl, or a box. So here, save

that in the examples given the cause is art, but in the nonhomogeneous

bodies nature or some other cause.

Since, then, we know to what element each of the homogeneous

bodies belongs, we must now find the definition of each of them, the

answer, that is, to the question, 'what is' flesh, semen, and the

rest? For we know the cause of a thing and its definition when we know

the material or the formal or, better, both the material and the

formal conditions of its generation and destruction, and the efficient

cause of it.

After the homogeneous bodies have been explained we must consider

the non-homogeneous too, and lastly the bodies made up of these,

such as man, plants, and the rest.


-THE END-