You cannot reach them as conclusions: they are premisses.
This is back towards Aristotle’s deductive reasoning model. One may begin with universal statements to find the particular conclusion. There are some instances, such as in that of the Moral Law, in which one cannot come to these as a conclusion from some particular premises. Instead, “man should care about posterity” is a premise upon which a particular conclusion, “that man should give up his life for the sake of others,” may be made.
