certain; our belief in them is clear and solid; but from _belief_ in them there is no bridge to _them_. Kant asserted the veracity of consciousness, and demanded an absolute acknowledgment of that veracity. The fidelity of the mind to itself was a first principle with him. Having these ideas, of the soul, of God, of a moral law; being certain that they neither originated in experience, nor depended on experience for their validity; that they transcended experience altogether--man was committed to an unswerving and uncompromising loyalty to himself. His prime duty consisted in deference to the integrity of his own mind. The laws of his intellectual and moral nature were inviolable. Whether there was or was not a God; whether there was or was not a substantial world of experience where the idea of rectitude could be realized, the dictate of duty justified, the soul's affirmation of good ratified by actual felicity,--rectitude was none the less incumbent on the rational mind; the law of duty was none the less imperative; the vision of good none the less glorious and inspiring. Virtue had its principle in the constitution of the mind itself. Every virtue had there its seat. There was no sweetness of purity, no heroism of faith, that had not an abiding-place in this impregnable fortress. Thus, while on the speculative side Kant came out a sceptic in regard to the dogmatic beliefs of mankind, on the practical side he remained the fast friend of intellectual truth and moral sanctity. Practical ethics never had a more stanch supporter than Immanuel Kant. If a man cannot pass beyond the confines of his own mind, he has, at all events, within his own mind a temple, a citadel, a home. The "Critique of Pure Reason" made no impression on its first appearance. But no sooner was its significance apprehended, than a storm of controversy betrayed the fact that even the friends of the new teacher were less content than he was to be shut up in their own minds. The calm, passionless, imperturbable man smoked his pipe in the peace of meditation; eager thinkers, desirous of getting more out of the system than its author did, were impatient at his backwardness, and made the intellectual world ring with their calls to improve upon and complete his task.