And I do realise that this may seem radical to people brought up with particle concepts of matter (as I was), yet physics itself tells us that matter is a large structure of space, as required by Einstein's general relativity and quantum physics .
See: Roland Holst-Van der Schalk, Henriette, 1869-1952
By mode I understand the affections of a substance, or that which is in another through which it is also conceived. (E1D5) 
Ethics (from the Greek ethos – custom) in the sense of systems of value and codes of conduct have always been part of human societies. In this sense ...
Ethics is not independent of other branches of inquiry. One important point of contact between ethics and metaphysics is the problem of free will . It is often argued that ethics presupposes that human agents have free will, for if it is true to say that someone should not have acted in a way that violated a moral obligation, then they must have been able to do something else instead. So it seems that ethics, especially in the sense of moral obligation, presupposes that human beings have free will.