"To those who ask, Where hast thou seen the gods, or how dost thou comprehend that they exist and so worshipest them? I answer, in the first place, that they may be seen even with the eyes; in the second place, neither have I seen my own soul, and yet I honor it. Thus then with respect to the gods, from what I constantly experience of their power, from this I comprehend that they exist, and I venerate them." (xii. 28, and the note. Comp. Aristotle de Mundo, c. 6; Xen. Mem. i. 4, 9; Cicero, Tuscul. i. 28, 29; St. Paul's Epistle to the Romans, i. 19, 20; and Montaigne's Apology for Raimond de Sebonde, ii. c. 12.) This is a very old argument, which has always had great weight with most people, and has appeared sufficient. It does not acquire the least additional strength by being developed in a learned treatise. It is as intelligible in its simple enunciation as it can be made. If it is rejected, there is no arguing with him who rejects it: and if it is worked out into innumerable particulars, the value of the evidence runs the risk of being buried under a mass of words. Man being conscious that he is a spiritual power, or that he has such a power, in whatever way he conceives that he has it--for I wish simply to state a fact--from this power which he has in himself, he is led, as Antoninus says, to believe that there is a greater power, which, as the old Stoics tell us, pervades the whole universe as the intellect[A] ([Greek: nous]) pervades man. (Compare Epictetus' Discourses, i. 14; and Voltaire à Mad^e. Necker, vol. lxvii., p. 278, ed. Lequien.)