The revelation of new truths is compared to the upheaval of rocks which reveal deeply-hidden strata. Stolid conservatism dislikes and avoids such facts, because they involve new thinking and disturb old theories. The leaden weight of scepticism drags down the minds of many, paralyzing their power of reasoning upon facts which reveal truth, from another standpoint than their own, with new simplicity and grandeur in the divine laws of the universe. Others there are, embracing the majority of mankind, according to Hazlitt, who stick to an opinion that they have long supported, and that supports them. But whenever a discovery or invention has made its way so well by itself as to achieve reputation, most people assert that they always believed in it from the first; and so will it be with Keely's inventions, in time. In our day so rapidly are anticipations realized and sanguine hopes converted into existing facts, one wonderful discovery followed by another, that it is strange to find men possessing any breadth of intellect rejecting truths from hearsay, instead of examining all things and holding fast to the truth. The laws of sympathetic association need only to be demonstrated and understood to carry conviction of their truth with them. They control our world and everything in it, from matter to spirit. They control all the systems of worlds in the universe; for they are the laws which Kepler predicted would in this century he revealed to man. The divine element is shown by these laws to be like the sun behind the clouds,--the source of all light, though itself unseen. Already the existence of this unknown force is as well established as was the expansive power of steam in the days when the world looked on and laughed at Rumsey and Fitch and Fulton while they were constructing their steamboats. Even when they were used for inland navigation, men of science declared ocean navigation by steam impracticable, up to the very hour of its consummation. In like manner with electricity, scientists declared an ocean telegraph impossible, asserting that the current strong enough to bear messages would melt the wires. Nothing could be more unpopular than railways were at their start. In England, Stephenson's were called "nuisances," and false prophets arose then (as now with Keely's inventions) to foretell their failure. It was predicted that they would soon be abandoned, and, if not given up, that they would starve the poor, destroy canal interests, crush thousands in fearful accidents, and cover the land with horror.