1. The first idea that man forms of the Earth, of the movements of the stars, and of the constitution of the universe, must be, in the commencement of his observations, entirely based upon the testimony of the senses. In his ignorance of the most elementary laws of physics, and of the forces of nature, having only his limited sight as a means of observation, he was able to judge only by appearances.
As he beheld the sun appear in the morning outside of the horizon and disappear in the evening on the other side, he naturally concluded that it revolved around the Earth, whilst the latter remained stationary. If it had been suggested to him that the contrary was the truth, he would have replied that that was impossible; for would he not have declared that we see the sun change its position, and we do not feel the Earth move?