The following quote from Aristotle's Metaphysics is utterly baffling to me:
The causes and starting-points of distinct things are distinct in a way, but in a way--if we are speaking universally and analogically--they are all the same...for example, the elements of perceptible bodies are presumably: as form , the hot and, in another way, the cold, which is the lack; and, as matter, what is potentially these directly and intrinsically. And both these and the things composed of them are substances, of which these are the starting-points (that is, anything that comes to be from the hot and the cold that is one [something-or-other] such as flesh or bone), since what comes to be must be distinct from them.
What is the meaning of "lack" here? Also, what is he talking about when he makes a connection between hot and cold on the one hand and blood and bone on the other?
Anyone who can put this into plain english would be helping me immensely. Thanks in advance!