We mean, then, that the selection of our ideals shall be determined by the largest possible knowledge of the facts pertaining to life. We mean to select as one would select who knew all about the antecedents and surroundings and remote consequences of life. In our own weakness and finitude we may go but a little way in the direction of such an insight, and may prefer to accept the judgment of tradition or authority, but we recognize a distinct type of knowledge as alone worthy to justify an individual's adoption of an ideal. That type of knowledge is the knowledge that comprehends the universe in its totality. Such knowledge does not involve completeness of information respecting all parts of reality. This, humanly speaking, is both unattainable and inconceivable. It involves rather a conception of the _kind_ of reality that is fundamental. For a wise purpose it is unnecessary that we should know many matters of fact, or even specific laws, provided we are convinced of the inner and essential character of the universe. Some of the alternatives are matters of every-day thought and speech. One cannot tell the simplest story of human life without disclosing them. To live the human life means to pursue ideals, that is, to have a thing in mind, and then to try to accomplish it. Here is one kind of reality and power. The planetary system, on the other hand, does not pursue ideals, but moves unconscious of itself, with a mechanical precision that can be expressed in a mathematical formula; and is representative of another kind of reality and power. Hence a very common and a very practical question: Is there an underlying law, like the law of gravitation, fundamentally and permanently governing life, in spite of its apparent direction by ideal and aspiration? Or is there an underlying power, like purpose, fundamentally and permanently governing the planetary system and all celestial worlds, in spite of the apparent control of blind and irresistible forces? This is a practical question because nothing could be more pertinent to our choice of ideals. Nothing could make more difference to life than a belief in the life or lifelessness of its environment. The faiths that generate or confirm our ideals always refer to this great issue. And this is but one, albeit the most profound, of the many issues that arise from the desire to obtain some conviction of the inner and essential character of life. Though so intimately connected with practical concerns, these issues are primarily the business of thought. In grappling with them, thought is called upon for its greatest comprehensiveness, penetration, and self-consistency. By the necessity of concentration, thought is sometimes led to forget its origin and the source of its problems. But in naming itself philosophy, thought has only recognized the definiteness and earnestness of its largest task. Philosophy is still thought about life, representing but