The objection to the use of an ideal dietary is, in the first place, that such a dietary has not been discovered. People claim to have discovered it, but that is different from really doing so. But the chief objection to the use of such a thing is that the body requires a variety of food, that a variety of food has been provided for it on the earth and that the part of us which is not body will not stand eating the same thing every day or even every week. Have you ever lived in a boarding house or in an institution where there was an invariable week's menu. It is a mechanical contrivance which soon stirs up rebellion, and rightly.
Probably a word more needs to be said on this subject of variety, for it is a saving grace in menu making. If one can give one's household _real_ variety of food, not merely that which is made by different methods of serving and cooking, but that which is actually a difference in constituents, mistakes in selection will then never get very long or thoroughly established. If one cannot be right all the time, by means of variety one can be fairly sure of being right some of the time. Variety is also made necessary by changes in season, in occupation, in state of health, and I think I may add without making a loop-hole for pampering people unduly, that it is made necessary at times by change of mood.
A trivial thing comes to my mind which none the less illustrates what I am trying to say about variety. So often I have seen a woman, whom I like to be with, a woman who has many, many things to do, take a few moments to make the last bit of her cookie-dough into an elephant or a rabbit of extraordinary figure. The cheering effect of this animal upon the boy who comes in from school very tired and perhaps cross or discouraged, is delightful to see. I repent that I called it a trivial thing, for this puffy, blunt-legged animal is to the child pleasant food, an amusing sight and the assurance that some one has thought gladly of him during the long school hours.
Variety in menus gives to the grown-up mind the same pleasurable feelings which the cookie elephant gives to the mind of the child, with this practical addition, that such feelings of pleasure also quicken the appetite and the energy and digestive powers of the body, thus enabling it to profit more by the nourishment varied foods convey.