It is indeed said that knowledge, if it could be acquired thus late in life, would be easily forgotten. This is true, if it be that kind of knowledge for which we have no immediate use. But if it be of a practical character, it will not fail to be remembered. Franklin was always learning, till death. And what he learned he seldom forgot, because he had an immediate use for it. I have said, it is a great point to be convinced of the importance of knowledge. I might add that it is a point of still greater consequence to feel our own ignorance. 'To know ourselves diseased, (morally) is half our cure.' To know our own ignorance is the first step to knowledge; and other things being alike, our progress in knowledge will generally be in proportion to our sense of the want of it. The strongest plea which indolence is apt to put in, is, that we have no _time_ for study. Many a young man has had some sense of his own ignorance, and a corresponding thirst for knowledge, but alas! the idea was entertained that he had no time to read--no time to study--no time to think. And resting on this plea as satisfactory, he has gone down to the grave the victim not only of indolence and ignorance, but perhaps of vice;--vice, too, which he might have escaped with a little more general intelligence. No greater mistake exists than that which so often haunts the human mind, that we cannot find _time_ for things; things, too, which we have previously decided for ourselves that we ought to do. Alfred, king of England, though he performed more business than almost any of his subjects, found time for study. Franklin, in the midst of all his labors, found time to dive into the depths of philosophy, and explore an untrodden path of science. Frederick the Great, with an empire at his direction, in the midst of war, and on the eve of battles, found time to revel in all the charms of philosophy, and to feast himself on the rich viands of intellect. Bonaparte, with Europe at his disposal, with kings at his ante-chamber begging for vacant thrones, and at the head of thousands of men whose destinies were suspended on his arbitrary pleasure, had time to converse with books. Caesar, when he had curbed the spirits of the Roman people, and was thronged with visitors from the remotest kingdoms, found time for intellectual cultivation. The late Dr. Rush, and the still later Dr. Dwight, are eminent instances of what may be done for the cultivation of the mind, in the midst of the greatest pressure of other occupation.