Kepler makes a wise remark, when speaking about the mathematical system by which the course of a star could be predicted. After describing the result of his observations, and declaring his firm belief that the will of the Lord is the supreme power in the laws of nature, he says: "But if there be any man who is too dull to receive this science, I advise that, leaving the school of astronomy, he follow his own path, and desist from this wandering through the universe; and, lifting up his natural eyes, with which he alone can see, pour himself out in his own heart, in praise of God the Creator; being certain that he gives no less worship to God than the astronomer, to whom God has given to see more clearly with his inward eye, and who, for what he has himself discovered, both can and will glorify God." That is, I think, a very beautiful illustration of what you may say to any poor illiterate man in your congregation: "Well, my friend, if you cannot comprehend this system of theology which I have explained to you, if these doctrines seem to you to be utterly incomprehensible, if you cannot follow me in my criticism upon the Greek text, if you cannot quite catch the poetical idea that I tried to give you just now, which is so charming to my own mind, nevertheless, if you know no more than that your Bible is true, that you yourself are a sinner, and that Jesus Christ is your Saviour, go on your way, and worship and adore, and think of God as you are able to do. Never mind about the astronomers, and the telescopes, and the stars, and the sun, and the moon; worship the Lord in your own fashion. Altogether apart from my theological knowledge, and my explanation of the doctrines revealed in the Scriptures, the Bible itself, and the precious truth you have received into your own soul, through the teaching of the Holy Spirit, will be quite enough to make you an acceptable worshiper of the Most High God." I suppose you are all aware that among the old systems of astronomy was one which placed the earth in the center, and made the sun, and the moon, and the stars revolve around it. "Its three fundamental principles were the immobility of the earth, its central position, and the daily revolution of all the heavenly bodies around it in circular orbits."