Episode 072 - Alternative Explanations in Science, and The Size of The Sun

Welcome to Episode Seventy-Two of Lucretius Today. I am your host Cassius, and together with my panelists from the EpicureanFriends.com forum, we'll walk you through the six books of Lucretius' poem, and discuss how Epicurean philosophy can apply to you today. We encourage you to study Epicurus for yourself, and we suggest the best place to start is the book, "Epicurus and His Philosophy" by Canadian professor Norman DeWitt. For anyone who is not familiar with our podcast, please check back to Episode One for a discussion of our goals and our ground rules. If you have any questions about those, please be sure to contact us at EpicureanFriends.com for more information. In this Episode 72 we will read approximately Latin line 509-613 of Book Five. We will talk about the location of the Earth within our "world," and well discuss Epicurus' perspective on science for the sake of science and the size of the sun and moon. Now let's join Don reading today's text.Browne 1743And thus were produced the Sea, the Air, and the Sky (or the ether) spangled with stars. All the finer seeds went to the formation of these fluid bodies, but some were more light than others; and the most light and liquid ether mounted higher, and spread over the body of the air, but its liquid parts never mixed with the turbulent blasts of the air below it. The airy region is tormented by violent whirlwinds, and disturbed by uncertain storms, while the ether calmly glides and bears along its fires in a fixed course. And that the ether may flow thus gently, and in a regular motion, we have an instance in the Euxine Sea, that runs with one certain tide, and preserves one constant stream in the current of its waters.Now let us show from what cause proceeds the motion of the stars. And first, if the whole orb of the heavens be moved, then we must allow that the air bounds and encloses the outward surface of the heavens, and both the poles. The upper part of this air presses above, and drives the skies down to the west, the course in which the stars (the great lights of the world) are to move; the under part flows below, and lifts up this orb from beneath, and makes it rise, as we see the wheels of a mill, or buckets, are turned about by a running stream.Or perhaps the whole body of the heavens may remain fixed, and yet the stars may execute their motions, either because some rapid particles of the sky are shut up, and struggling to find a way into the empty space, are whirled about, and drag the stars along with them; or some external air, rushing in from some other place, may turn them about; or they may move severally forward of themselves through the sky, where proper nourishment invites them to feed and keep alive their fires. But it is hard to resolve for certain what is the particular cause of these motions in this world of ours. I rather propose reasons in general for what may be done through the universe, in the multitude of worlds contained in the great All, and formed after various manners, And I offer many causes that may account for the whole, yet one only can be the true one that produced these effects; but to pronounce which it is, no wary philosopher will take upon him to do.But that the Earth should rest in the middle region of the world it is necessary that its weight should in some degree lessen and be laid aside, and for this end it was fit that another substance should be placed under it, to which from the very beginning it should be united closely by natural and congenial ties, and upon which it should be staid. This substance being the surrounding air, which is a part of the same whole, and as it were of a piece with the earth, the earth therefore hangs suspended in the middle, and is no weight or pressure to the air at all; and so the limbs are no load to the body of a man, nor is the head a burden to the neck, nor do we perceive the weight of the whole body to press heavy upon the...