Furthermore, when we contemplate earth’s delicate poise of forces,—“No balance turning to 1/1000 of a grain being more delicate,”—we may well believe the sun is the same to-day as two thousand years ago; for it could not have wasted any of its substance without having thereby affected the gravitation of the earth. In some manner, like the waters that rise from ocean and return again; like the steam, and burning bodies that are not lost; and like the atmosphere the earth holds, the sun may be also holding its every atom of heat; though changed, perhaps, in some of its combinations. We must remember that the sun’s rays, as they pass into space, can be seen by us only when the vibrations are between 400 and 800 trillions per seconds, for above or below that number they are invisible to human sight. Were these rays condensed, or in some manner changed, making as great a difference between them as there is difference between the vapors rising from the ocean to the clouds, and the streams returning to them; they might before their condensation, or change, give different vibrations from the ones they would afterward give. While the heat escaping from one gave light the others returning might be invisible to us. It is evident that were the sun a dark object it would be invisible to us, as would the moon without the sun’s rays resting upon it. May not all light be restored to the sun, and thus keep up its supply of heat—as well as vapors be returned to ocean—instead of supposing it is caused by contraction? The only sounds that our ears can detect are vibrations between 16.5 and 38,000 per second and unquestionably all above 38,000, even up to and above those of light, would give sound had we the faculties to detect it. Had we then the right senses all vibrations below 400 trillions or above 800 trillions per second would be visible as well as the vibrations that give us light. Though it is difficult to understand, from all the materials that we are familiar with, how a fire can burn without its substance being consumed, we should remember the bush that astonished Moses by burning without consuming. As little can we conceive that there is a great globe of fire keeping up its flame and heat for thousands of years without being diminished. The sun, although seeming to us small as a ball, is visible at a distance of over 90,000,000 miles. Could we conceive of any object, even though a million times larger than earth, being seen by us at that distance only from the fact that it is thus daily seen, and apparently is the same size as when our eyes first rested upon it. Even these visible truths are beyond our conception, and knowing that it is so we should feel that any truth, however astonishingly great, may be possible.