20 And, that we may show you more clearly and distinctly what is the worth of man, whom you believe to be very like the higher power, conceive this idea; and because it can be done if we come into direct contact with it, let us conceive it just as if we came into contact. Let us then imagine a place dug out in the earth, fit for dwelling in, formed into a chamber, enclosed by a roof and walls, not cold in winter, not too warm in summer, but so regulated and equable that we suffer neither cold nor the violent heat of summer. To this let there not come any sound or cry whatever, of bird, of beast, of storm, of man— of any noise, in fine, or of the thunder's terrible crash. Let us next devise a way in which it may be lighted not by the introduction of fire, nor by the sight of the sun, but let there be some counterfeit to imitate sunlight, darkness being interposed. Let there not be one door, nor a direct entrance, but let it be approached by tortuous windings, and let it never be thrown open unless when it is absolutely necessary.
Source: Against the Heathen (New Advent)