A wise man, who lived a long life of virtue, study, travel, society, and reflection; who read the best books and conversed with the greatest and best men; the companion of philosophers and scientists; familiar with all important discoveries and experiments; after he was three-score and ten, wrote, "It is remarkable that the more there is known, the more it is perceived there is to be known. And the infinity of knowledge to be acquired runs parallel with the infinite faculty of knowing, and its development. Sometimes I feel reconciled to my extreme ignorance, by thinking, If I know nothing, the most learned know next to nothing." "Had I earlier known," said Goethe, "how many excellent things have been in existence, for hundreds and thousands of years, I should have written no line; I should have had enough else to do." Cardinal Farnese one day found Michel Angelo, when an old man, walking alone in the Coliseum, and expressed his surprise at finding him solitary amidst the ruins; to which he replied, "I go yet to school, that I may continue to learn." In his last days, he made a design of himself as a child in a go-cart, with this motto under it, "I am yet learning." Rubens complained, that just as he was beginning to understand his profession he was forced to quit it. Mozart declared on his death-bed, that he began to see what may be done in music. Buffon told a friend that, after passing fifty years at his desk, he was every day learning to write. Macaulay, the year before his death, after spending some hours over his own writings, wrote in his diary: "Alas! how short life and how long art! I feel as if I had just begun to understand how to write; and the probability is that I have very nearly done writing." Theophrastus, one hundred and seven years old, St. Jerome assures us, lamented that he was obliged to quit life at a time when he just began to be wise. Mrs. Jameson once asked Mrs. Siddons which of her great characters she preferred to play? She replied, after a moment's consideration, "Lady Macbeth is the character I have most studied." She afterward said that she had played the character during thirty years, and scarcely acted it once without carefully reading over the part, and generally the whole play, in the morning; and that she never read over the play without finding something new in it; "something," she said, "which had not struck me so much as it ought to have struck me." Dugald Stewart said of Bacon's Essays that in reading them for the twentieth time he observed something which had escaped his attention in the nineteenth. "I do not know," said Newton, "what I may appear to the world; but to myself I seem to have been only like a boy playing on the sea-shore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, while the great ocean of truth lay all undiscovered before me." Said Bossuet, "The term of my existence will be eighty years at most, but let us allow it an hundred.