Of all these various views there is one that should be regarded as of primary importance, namely, the question of health. First and foremost we have to consider the question of physical health. No system of thought that poses as being concerned with man's welfare on earth can ever make headway unless it recognises this. Physical well-being is a moral consideration that should and must have our attention before aught else, and that this is so needs no demonstrating; it is self-evident. Now it is not to be denied when we look at the over-flowing hospitals; when we see everywhere advertised patent medicines; when we realise that a vast amount of work is done by the medical profession among all classes; when we learn that one man out of twelve and one woman out of eight die every year from that most terrible disease, cancer, and that over 207,000 persons died from tuberculosis during the first seven years of the present century; when we learn that there are over 1500 defined diseases prevalent among us and that the list is being continually added to, that the general health of the nation is far different from what we have every reason to believe it ought to be. However much we may have become accustomed to it, we cannot suppose ill-health to be a _normal_ condition. Granted, then, that the general health of the nation is far from what it should be, and looking from effects to causes, may we not pertinently enquire whether our diet is not largely responsible for this state of things? May it not be that wrong feeding and mal-nutrition are at the root of most disease? It needs no demonstrating that man's health is directly dependent upon what he eats, yet how few possess even the most elementary conception of the principles of nutrition in relation to health? Is it not evident that it is because of this lamentable ignorance so many people nowadays suffer from ill-health? Further, not only does diet exert a definite influence upon physical well-being, but it indirectly affects the entire intellectual and moral evolution of mankind. Just as a man thinks so he becomes, and 'a science which controls the building of brain-cell, and therefore of mind-stuff, lies at the root of all the problems of life.' From the point of view of food-science, mind and body are inseparable; one reacts upon the other; and though a healthy body may not be essential to happiness, good health goes a long way towards making life worth living. Dr. Alexander Haig, who has done such excellent and valuable work in the study of uric acid in relation to disease, speaks most emphatically on this point: 'DIET is the greatest question for the human race, not only does his ability to obtain food determine man's existence, but its quality controls the circulation in the brain, and this decides the trend of being and action, accounting for much of the indifference between depravity and the self-control of wisdom.'