There are persons in whom moral principle seems to have completely triumphed; whose conduct, so far as one can judge, is determined solely by moral rules; but whom, nevertheless, we do not wholly admire. We feel instinctively that there is in their virtue a certain flaw--the absence of a saving grace. They are too rigorous, too much the slaves of duty. They lack geniality. Like religion, morality has its fanatics. Thus, there is in the temperance movement a class of fanatics who look at every public question from the point of view of temperance reform, and from that only. There are also woman's-rights fanatics, social purity fanatics, etc. The moral fanatic in every case is a person whose attention is wholly engrossed by some one moral interest, and who sees this out of its relation to other moral interests. The end he has in view may be in itself highly laudable, but the exaggerated emphasis put upon it, the one-sided pursuit of it, is a mischievous error. Observe, further, that there are degrees of moral fanaticism. The fanatic of the first degree, to whom Emerson addresses the words, "What right have you, sir, to your one virtue?" has just been described. He is a person who exalts some one moral rule at the expense of the others. A fanatic of a higher order is he who exalts the whole body of moral rules at the expense of human instincts and desires. He is a person who always acts according to rule; who introduces moral considerations into every detail of life; who rides the moral hobby; in whose eyes the infinite complexity of human affairs has only one aspect, namely, the moral; who is never satisfied unless at every step he feels the strain of the bridle of conscience; who is incapable of spontaneous action and of _naive_ enjoyment. It is believed that there are not a few persons of this description in the United States, and especially in the New England States--fanatics on the moral side, examples of a one-sided development in the direction of moral formalism. We must be very careful, when insisting on the authority of moral ideas, lest we encourage in the young a tendency of this sort. The hearts of children are very pliable; it is easily possible to produce on them too deep an impression: to give them at the outset a fatal twist, all the more since at a certain age many young people are prone to exaggerated introspection and self-questioning. But it may be asked: Are not moral principles really clothed with supreme authority? Ought we not, indeed, to keep the standard of righteousness constantly before our eyes; in brief, is it possible to be too moral? Evidently we have reached a point where a distinction requires to be drawn.