That is to say, in the language of current economic theory, while men are reluctant to retrench their expenditures in any direction, they are more reluctant to retrench in some directions than in others; so that while any accustomed consumption is reluctantly given up, there are certain lines of consumption which are given up with relatively extreme reluctance. The articles or forms of consumption to which the consumer clings with the greatest tenacity are commonly the so-called necessaries of life, or the subsistence minimum. The subsistence minimum is of course not a rigidly determined allowance of goods, definite and invariable in kind and quantity; but for the purpose in hand it may be taken to comprise a certain, more or less definite, aggregate of consumption required for the maintenance of life. This minimum, it may be assumed, is ordinarily given up last in case of a progressive retrenchment of expenditure. That is to say, in a general way, the most ancient and ingrained of the habits which govern the individual's life--those habits that touch his existence as an organism--are the most persistent and imperative. Beyond these come the higher wants--later-formed habits of the individual or the race--in a somewhat irregular and by no means invariable gradation. Some of these higher wants, as for instance the habitual use of certain stimulants, or the need of salvation (in the eschatological sense), or of good repute, may in some cases take precedence of the lower or more elementary wants. In general, the longer the habituation, the more unbroken the habit, and the more nearly it coincides with previous habitual forms of the life process, the more persistently will the given habit assert itself. The habit will be stronger if the particular traits of human nature which its action involves, or the particular aptitudes that find exercise in it, are traits or aptitudes that are already largely and profoundly concerned in the life process or that are intimately bound up with the life history of the particular racial stock. The varying degrees of ease with which different habits are formed by different persons, as well as the varying degrees of reluctance with which different habits are given up, goes to say that the formation of specific habits is not a matter of length of habituation simply. Inherited aptitudes and traits of temperament count for quite as much as length of habituation in deciding what range of habits will come to dominate any individual's scheme of life. And the prevalent type of transmitted aptitudes, or in other words the type of temperament belonging to the dominant ethnic element in any community, will go far to decide what will be the scope and form of expression of the community's habitual life process. How greatly the transmitted idiosyncrasies of aptitude may count in the way of a rapid and definitive formation of habit in individuals is illustrated by the