stone, mediæval chemists made many of the great discoveries on which modern chemistry is founded; so, in the elaborate and careful consideration of the difficulties of psychology, should those difficulties themselves receive no solution, important truths must be nevertheless incidentally discovered or confirmed. If so, the labourer will not be without his reward.
But, above all things, the writer is anxious to guard himself against any suspicion of dogmatising or laying down the law certainly or conclusively on any of the topics discussed.
He proposes to examine, to discuss, to sift them; but, while he is ready to point out the conclusion to which the examination appears to him legitimately to lead, he has earnestly endeavoured to express his opinions in that spirit of respect for others, toleration, and Christian charity, which a mind engaged in the earnest and honest search after truth learns from the very nature of its labours.
To suggest an elevated train of thought, and to promote an earnest inquiry after truth in its purity, are the main objects of his work.