then, exist for thinking that the growth of capital will never end or check further growth. There are still further facts, however, which have a bearing on this problem. _The Importance of the Character of the Increases which are the Largest Sources of Accumulation._--If one has a doubt whether the large sums which enter into the capital which is steadily accumulating are saved under the influence of a desire to maintain a standard, this doubt will be removed by a consideration of the source from which great accumulations come. They come most largely from the net profits of the _entrepreneur_. Next to that they come from the earnings of what must be classed as labor, though much of it is labor of a special and very superior sort. The salary which the head of a corporation receives, the fees that its lawyers get, the fees that come to eminent surgeons or engineers, are all payments for labor; and these, taken together with the earnings of well-paid artisans, successful farmers, and very many others, constitute the second contribution to accumulating capital. Savings from simple interest itself constitute the third contribution.[1] [1] Gains which come from holding land which rises in value more rapidly than the interest on the price of it accumulates, is to be rated as part of net _entrepreneur's_ profits. Now, of these sources of income, net profits and the wages of superior labor are transient, and the profits are particularly so. The man whose mill earns fifty per cent in a particular year would be foolish in the last degree if he used all that as income. That would mean brief and riotous enjoyment, followed by a most painful fall from the standard so established. He will naturally spend some part of the phenomenal dividend and lay aside enough of it to afford a guarantee that his future income will not fall below the present one. The man who during the best years of his working life enjoys a salary or professional fees amounting to a hundred thousand dollars a year would be almost equally foolish if he were to spend it all as he earns it, leaving his family unprovided for and his own later years exposed to the pains of sharp retrenchment. Transient incomes suggest to every one who has any degree of reason the need of establishing and maintaining some future standard of living, and of investing enough to accomplish this. This is more true, of course, when the rate of interest is low.