righteousness, and many other hungers and thirsts which must all be reckoned with in the study of evolution.
And man can see the workings of this side of evolution in his own mind.
I have become a vegetarian, for instance, and I am unable to detect any economic reason for my change of diet.
I know many others of whom the same is true.
In time the increase in the number of such vegetarians will produce an appreciable effect upon the economic condition of mankind, and here clearly will be a change occasioned in large part by pure idealism.
The same is true of socialism, and I know many leading socialists who, so far from having been impelled to socialism by economic motives, would be economic losers by its victory.
And so with the temperance movement, the peace movement, the movement for the prevention of cruelty to animals, and many others.
I am conscious and every man is conscious, of doing things every day against mere economic interests, and I do not refer exclusively to philanthropy by any means.
The millionaire who spends his money on a trip to Europe
instead of saving it overrules his economic interests on account of his higher desire for novel experiences, and he does the same thing when he pays for a superfluous ornament on his house.
To overlook men's desires is to overlook life itself, and in the record of the living