Because of the diverse conditions of humans, it happens that some acts are virtuous to some people, as appropriate and suitable to them, while the same acts are immoral for others, as inappropriate to them.
Good can exist without evil, whereas evil cannot exist without good.
Well-ordered self-love is right and natural.
Whatever is received is received according to the nature of the recipient.
There is nothing on this earth more to be prized than true friendship.
God should not be called an individual substance, since the principal of individuation is matter.