(2) It is universally agreed that thought is the object of Logic. But of thought our estimate may be very mean, or it may be very high. On one hand, people say: 'It is _only_ a thought.' In their view thought is subjective, arbitrary and accidental--distinguished from the thing itself, from the true and the real. On the other hand, a very high estimate may be formed of thought; when thought alone is held adequate to attain the highest of all things, the nature of God, of which the senses can tell us nothing. God is a spirit, it is said, and must be worshipped in spirit and in truth. But the merely felt and sensible, we admit, is not the spiritual; its heart of hearts is in thought; and only spirit can know spirit. And though it is true that spirit can demean itself as feeling and sense--as is the case in religion, the mere feeling, as a mode of consciousness, is one thing, and its contents another. Feeling, as feeling, is the general form of the sensuous nature which we have in common with the brutes. This form, viz. feeling, may possibly seize and appropriate the full organic truth: but the form has no real congruity with its contents. The form of feeling is the lowest in which spiritual truth can be expressed. The world of spiritual existences, God himself, exists in proper truth, only in thought and as thought. If this be so, there fore, thought, far from being a mere thought, is the highest and, in strict accuracy, the sole mode of apprehending the eternal and absolute. As of thought, so also of the science of thought, a very high or a very low opinion may be formed. Any man, it is supposed, can think without Logic, as he can digest without studying physiology. If he have studied Logic, he thinks afterwards as he did before, perhaps more methodically, but with little alteration. If this were all, and if Logic did no more than make men acquainted with the action of thought as the faculty of comparison and classification, it would produce nothing which had not been done quite as well before. And in point of fact Logic hitherto had no other idea of its duty than this. Yet to be well-informed about thought, even as a mere activity of the subject-mind, is honourable and interesting for man. It is in knowing what he is and what he does, that man is distinguished from the brutes. But we may take the higher estimate of thought--as what alone can get really in touch with the supreme and true. In that case, Logic as the science of thought occupies a high ground. If the science of Logic then considers thought in its action and its productions (and thought being no resultless energy produces thoughts and the particular thought required), the theme of Logic is in general the supersensible world, and to deal with that theme is to dwell for a while in that world. Mathematics is concerned with the abstractions of time and space. But these are still the object of sense, although the sensible is abstract and idealised.