Then Paul goes further, and with even greater boldness adds, "Whether there be knowledge, it shall vanish away." The wisdom of the ancients, where is it? It is wholly gone. A schoolboy today knows more than Sir Isaac Newton knew. His knowledge has vanished away. You put yesterday's newspaper in the fire. Its knowledge has vanished away. You buy the old editions of the great encyclopedias for a few cents. Their knowledge has vanished away. Look how the coach has been superseded by the use of steam. Look how electricity has superseded that, and swept a hundred almost new inventions into oblivion. One of the greatest living authorities, Sir William Thompson, said the other day, "The steam-engine is passing away." "Whether there be knowledge, it shall vanish away." At every workshop you will see, in the back yard, a heap of old iron, a few wheels, a few levers, a few cranks, broken and eaten with rust. Twenty years ago that was the pride of the city. Men flocked in from the country to see the great invention; now it is superseded, its day is done. And all the boasted science and philosophy of this day will soon be old. But yesterday, in the University of Edinburgh, the greatest figure in the faculty was Sir James Simpson, the discoverer of chloroform. The other day his successor and nephew, Professor Simpson, was asked by the librarian of the university to go to the library and pick out the books on his subject that were no longer needed. And his reply to the librarian was this: "Take every textbook that is more than ten years old, and put it down in the cellar." Sir James Simpson was a great authority only a few years ago; men came from all parts of the earth to consult him; and almost the whole teaching of that time is consigned by the science of today to oblivion. And in every branch of science it is the same. "Now we know in part. We see through a glass darkly."