Much vain controversy has arisen concerning the reality of the external universe, owing to the fallacious notion that because perception arises through the knowledge of causality, the relation of subject and object is that of cause and effect. For this relation only subsists between objects, that is between the immediate object and objects known indirectly. The object always pre-supposes the subject, and so there can be between those two no relation of reason and consequent. Therefore the controversy between realistic dogmatism and doctrinal scepticism is foolish. The former seeks to separate object and idea as cause and effect, whereas these two are really one; the latter supposes that in the idea we have only the effect, never the cause, and never know the real being, but merely its action. The correction of both these fallacies is the same, that object and idea are identical. One of the most pressing of questions is, how certainty is to be reached, how judgments are to be established, and wherein knowledge and science consist. Reason is feminine in nature; it can only give after it has received. Of Itself it possesses only the empty forms of its operation. Knowledge is the result of reason, so that we cannot accurately say that the lower animals know anything, but only that they apprehend through the faculty of perception. The greatest value of knowledge is that it can be communicated and retained. This makes it inestimably important for practice. Rational or abstract knowledge is that knowledge which is peculiar to the reason as distinguished from the understanding. The use of reason is that it substitutes abstract concepts for ideas of perception, and adopts them as the guide of action. The many-sided view of life which man, as distinguished from the lower animals, possesses through reason, makes him stand to them as the captain, equipped with chart, compass and quadrant, and with a knowledge of navigation of the ocean, stands to the ignorant sailors under his command. Man lives two lives. Besides his life in the concrete is his life in the abstract. In the former he struggles, suffers, and dies as do the mere animal creatures. But in the abstract he quietly reflects on the plan of the universe as does a captain of a ship on the chart. He becomes in this abstract life of calm reasoning a deliberate observer of those elements which previously moved and agitated his emotions. Withdrawing into this serene contemplation he is like an actor who has played a part on the stage and then withdraws and as one of the audience quietly looks on at other actors energetically performing.