Book X of Plato’s Laws opens its treatment of impiety with this speech, in which the Athenian Stranger and his two companions turn to the “Gods” as the ground of the whole code. He speaks of a “prelude” to the laws and undertakes a “demonstration”. The dialogue is Plato’s last and longest, and this passage is cited as an early case of argument about the divine as a part of lawmaking. It sits under natural theology as the proposal to prove the gods by reason.
Read in contextIt is a matter of no small consequence, in some way or other to prove that there are Gods, and that they are good, and regard justice more than men do. The demonstration of this would be the best and noblest prelude of all our laws. And therefore, without impatience, and without hurry, let us unreservedly consider the whole matter, summoning up all the power of persuasion which we possess.
ATHENIAN. Seeing you thus in earnest, I would fain offer up a prayer that I may succeed: but I must proceed at once. Who can be calm when he is called upon to prove the existence of the Gods?
