Yet he began life with seemingly excellent prospects. His parents were well to do and could give him every educational advantage. And in early childhood he was both a bright boy and a well-behaved boy. A little later, when he began to go to school, there was a noticeable change in his disposition. His parents learned that he did not associate with other boys as readily as might be desired. They noticed that he developed a tendency to keep much by himself, to be uncommunicative, to smile seldom--in fine, to sulk. But, though they noticed this, they fancied it was only a passing phase which he would in time outgrow. They failed to take his sulkiness seriously--failed, that is to say, to recognise in it a sign that something was amiss which should be seriously investigated. To-day, perhaps wholly because no investigation was made and no corrective treatment attempted, this unfortunate man is finding life a heavy burden. With all the emphasis at my command I would say, When a child frequently sulks, it is _always_ a sure indication of mental or nervous stress. If parents have a child who is sulky, they should neither ignore the sulkiness nor accuse him of wilful naughtiness and try to improve him by scoldings and punishments. They should recognise, in his habit of sulking, evidence of one of two things: either that they are not bringing him up as they should, or that he is suffering from some unsuspected physical disability, of which his sullen, morose, peevish disposition is symptomatic. It may be that this disability is an irremediable one, such as organic weakness of the brain. But the chances are that it is caused by functional disturbances easily discovered and easily cured. The parent is neglecting his full duty to his child if he fail to inquire into the child's physical condition. One of the commonest causes of sulkiness is nothing more or less than indigestion. Everybody knows that if a baby's food disagrees with him the baby is pretty sure to be fretful and irritable. But parents too often forget that, in the case of older children, mental and moral eccentricities may be traced to the same cause. When food is not properly digested, there is an impoverishing and poisoning of the blood. This means that the brain is poorly nourished, and a poorly nourished brain means a general weakening of the power to think and to will. It means, too, a heightening of nervous irritability, coupled with a tendency to take a gloomy view of life. Under these circumstances, it is not at all surprising to find sulkiness becoming characteristic of a child of any age, as in a typical case reported by Doctor T. A. Williams, of Washington, a specialist in the treatment of the nervous diseases of children.