P36: The greatest good of those who seek virtue is common to all, and can be enjoyed by all equally.
Dem.: To act from virtue is to act according to the guidance of reason (by P24), and whatever we strive for from reason is understanding (by P26). Hence (by P28), the greatest good of those who seek virtue is to know God/Nature, i.e. (by IIP47 and P47 S), a good that is common to all men, and can be possessed equally by all men insofar as they are of the same nature, q.e.d.
Schol.: But suppose someone should ask: what if the greatest good of those who seek virtue were not common to all? Would it not follow from that, as above (see P34), that men who live according to the guidance of reason, i.e. (by P35), men, insofar as they agree in nature, would be contrary to one another?
To this the answer is that it is not by accident that man’s greatest good is common to all; rather, it arises from the very nature of reason, because it is deduced from the very essence of man, insofar as {that essence} is defined by reason, and because man could neither be nor be conceived if he did not have the power to enjoy this greatest good. For it pertains to the essence of the human Mind (by IIP47) to have an adequate knowledge of God/Nature’s eternal and infinite essence.