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 and so varied and important are its bearings, that we hesitate not to say it will be food for philosophers of all time. It is a subject of such vast extent that what little progress we may make in its acquirement is scarcely noticeable, for it seems to keep continually beyond our grasp; and, in fact, so apparent was this to the ancient philosophers that many of them actually declared that it was not within man's power to find; that try hard as he may he never could obtain truth; and even allowing that he could do so, he would not then be certain that he had possession of it. This is going to extremes indeed, but we must remember that extreme views help to extend and develope human thought, and are equally as beneficial as the most impartial views to the proper understanding of truth. We hold the opinion that although man may not be capable of knowing all truth, still when he has the truth he is capable of appreciating its presence, or what would be the use of his senses? We know full well that nothing in nature is made without a purpose, and our perceptive faculties are no exception to this universal rule. For this reason it is man's duty to analyse carefully everything with which his ideas are brought in contact. This brings us to the first proposition of our text, "A knowledge of Truth is best for human welfare." It will be observed that the statement does not simply say that truth is best; but it goes on to say that a knowledge of truth is best. It is no use having a machine without knowing how to use it, nor an electric telegraph without knowing how to communicate through its agency—the knowledge of its method of working and general management, is what is required. And the same argument applies to truth. Truth is of little or no use to man unless he has a knowledge of its existence and the proper method of applying it. For instance, of what use would be the truths revealed to us by the telescope if we did not properly understand their significance, and the uses to which discoveries effected by their aid might be put for the benefit of humanity? We shall further illustrate our remarks by noting one or two of the benefits conferred on the race by the discoveries of Astronomy.