As Isaac grew older, it was found that he had far more important matters in his mind than the manufacture of toys like the little windmill. All day long, if left to himself, he was either absorbed in thought or engaged in some book of mathematics or natural philosophy. At night, I think it probable, he looked up with reverential curiosity to the stars, and wondered whether they were worlds like our own, and how great was their distance from the earth, and what was the power that kept them in their courses. Perhaps, even so early in life, Isaac Newton felt a presentiment that he should be able, hereafter, to answer all these questions.
When Isaac was fourteen years old, his mother’s second husband being now dead, she wished her son to leave school and assist her in managing the farm at Woolsthorpe. For a year or two, therefore, he tried to turn his attention to farming. But his mind was so bent on becoming a scholar that his mother sent him back to school, and afterwards to the University of Cambridge.
I have now finished my anecdotes of Isaac Newton’s boyhood. My story would be far too long were I to mention all the splendid discoveries which he made after he came to be a man. He was the first that found out the nature of light; for, before his day, nobody could tell what the sunshine was composed of. You remember, I suppose, the story of an apple’s falling on his head, and thus leading him to discover the force of gravitation, which keeps the heavenly bodies in their courses. When he had once got hold of this idea, he never permitted his mind to rest until he had searched out all the laws by which the planets are guided through the sky. This he did as thoroughly as if he had gone up among the stars and tracked them in their orbits. The boy had found out the mechanism of a windmill; the man explained to his fellow-men the mechanism of the universe.
While making these researches he was accustomed to spend night after night in a lofty tower, gazing at the heavenly bodies through a telescope. His mind was lifted far above the things of this world. He may be said, indeed, to have spent the greater part of his life in worlds that lie thousands and millions of miles away; for where the thoughts and the heart are, there is our true existence.
Did you never hear the story of Newton and his little dog Diamond? One day, when he was fifty years old, and had been hard at work more than twenty years studying the theory of light, he went out of his chamber, leaving his little dog asleep before the fire. On the table lay a heap of manuscript papers, containing all the discoveries which Newton had made during those twenty years. When his master was gone, up rose little Diamond, jumped upon the table, and overthrew the lighted candle. The papers immediately caught fire.
Just as the destruction was completed Newton opened the chamber door, and perceived that the labors of twenty years were reduced to a heap of ashes. There stood little Diamond, the author of all the mischief. Almost any other man would have sentenced the dog to immediate death. But Newton patted him on the head with his usual kindness, although grief was at his heart.
“O Diamond, Diamond,” exclaimed he, “thou little knowest the mischief then hast done!”
This incident affected his health and spirits for some time afterwards; but, from his conduct towards the little dog, you may judge what was the sweetness of his temper.
Newton lived to be a very old man, and acquired great renown, and was made a member of Parliament, and received the honor of knighthood from the king. But he cared little for earthly fame and honors, and felt no pride in the vastness of his knowledge. All that he had learned only made him feel how little he knew in comparison to what remained to be known.
“I seem to myself like a child,” observed he, “playing on the sea-shore, and picking up here and there a curious shell or a pretty pebble, while the boundless ocean of Truth lies undiscovered before me.”