A man whose city house is closed from the public in the summer season, because of his absence in the country, has a perfect right to come to that house for a single night, without opening the shutters and lighting up the rooms in intimation of his presence. He may even keep those shutters closed while his room is lighted, for the express purpose of concealing the fact of his presence there, and yet not be responsible for any false impression on the minds of passers-by, who think that the proprietor is still in the country, and that the city house is vacant. On the other hand, if the house be left lighted up all through the night, with the shutters open, while the inmates are asleep, for the very purpose of concealing from those outside the fact that no one in the house is awake and on guard, the proprietor is not responsible for any self-deception which results to those who have no right to know the facts in the case.

And so, again, in the matter of having a man's hat or coat on the rack in the front hall, while there are only women in the house, the sole purpose of the action may be the concealment of the real condition of affairs from those who have no claim to know the truth, and not the deliberate deception of any party in interest. In so far as the purpose is merely the concealment from others of the defenseless condition of the house the action is obviously a proper one, notwithstanding its liability to result in false impressions on the minds of those who have no right to an opinion in the case.

While a man would be justified in concealing, without falsehood, the fact of a bodily lack or infirmity on his part which concerned himself alone, he would not be justified in concealing the fact that he was sick of a contagious disease, or that his house was infected by a disease that might be given to a caller there. Nor would he be justified in concealing a defect in a horse or a cow in order to deceive a man into the purchase of that animal as a sound one, any more than he would be justified in slightly covering an opening in the ground before his house, so as to deceive a disagreeable visitor into stumbling into that hole.

It would be altogether proper for a man with a bald head to conceal his baldness from the general public by a well-constructed wig. It would likewise be proper for him to wear a wig in order to guard his shining pate against flies while at church in July, or against danger from pneumonia in January, even though wide-awake children in the neighboring pews deceived themselves into thinking that he had a fine head of natural hair. But if that man were to wear that wig for the purpose of deceiving a young woman, whom he wished to marry, as to his age and as to his freedom from bodily defects, it would be quite a different matter. Concealment for the mere purpose of concealment may be, not only justifiable, but a duty. Concealment for the purpose of deception is never justifiable.

It would seem that this is the principle on which God acts with reference to both the material and the moral universe. He conceals facts, with the result that many a man is self-deceived, in his ignorance, as to the size of the stars, and the cause of eclipses, and the processes of nature, and the consequences of conduct, in many an important particular. But man, and not God, is responsible for man's self-deception concerning points at which man can make no claim to a right to know all the truth.

It is true that this distinction is a delicate one, but it is a distinction none the less real on that account. A moral line, like a mathematical line, has length, but neither breadth nor thickness. And the line that separates a justifiable concealment which causes self-deception on the part of those who are not entitled to know the whole truth in the matter, and the deliberate concealment of truth for the specific purpose of deception, is a line that runs all the way up from the foundations to the summit of the universe. This line of distinction is vital to an understanding of the question of the duty of truth-speaking, and of the sin of lying.

An effort at right concealment may include truthful statements which are likely, or even sure, to result in false impressions on the mind of the one to whom they are addressed, and who in consequence deceives himself as to the facts, when the purpose of those statements is not the deception of the hearer. A husband may have had a serious misunderstanding with his wife that causes him pain of heart, so that his face gives sign of it as he comes out of the house in the morning. The difficulty which has given him such mental anxiety is one which he ought to conceal. He has no right to disclose it to others. Yet he has no right to speak an untruth for the purpose of concealing that which he ought to conceal.

It may be that the mental trouble has already deprived him of sleep, and has intensified his anxiety over a special business matter that awaits his attention down town, and that all this shows in his face. If so, these facts are secondary but very real causes of his troubled look, as he meets a neighbor on leaving his house, who says to him: "You look very much troubled this morning. What's the matter with you?" Now, if he were to say in reply, "Then my looks belie me; for I have no special trouble," he would say what was not true. But he might properly say, "I think it is very likely. I didn't sleep well last night, and I am very tired this morning. And I have work before me to-day that I am not easy about." Those statements being literally true, and being made for the purpose of concealing facts which his questioner has no right to know, their utterance is justifiable, regardless of the workings of the mind of the one who hears them. They are made in order to conceal what is back of them, not in order to deceive one who is entitled to know those primary facts.

If, again, a physician in attendance on a patient sees that there is cause for grave anxiety in the patient's condition, and deems it important to conceal his fears, so far as he can without untruthfulness, he may, in answer to direct questions from his patient, give truthful answers that are designed to conceal what he has a right to conceal, without his desiring to deceive his patient, and without his being responsible for any self-deception on his patient's part that results from their conversation. The patient may ask, "Doctor, am I very sick?" The doctor may answer truthfully, "Not so sick as you might be, by a good deal." He may give this answer with a cheerful look and tone, and it may result in calming the patient's fears.

If, however, the patient goes on to ask, "But, doctor, do you think I'm going to die?" the doctor may respond lightly, "Well, most of us will die sooner or later, and I suppose you are not to be exempt from the ordinary lot of mortals." "But," continues the patient, "do you think I am going to die of this disease?" Then the doctor can say, seriously and truthfully, "I'm sure I don't know. The future is concealed from me. You may live longer than I do. I certainly hope you are not going to die yet awhile, and I'm going to do all I can to prevent it." All this would be justifiable, and be within the limits of truthfulness. Concealment of the opinions of the physician as to the patient's chances of life, and not the specific deception of the patient, is the object of these answers.