d in the changes that were going on around them. It hindered them from inquiring whether many even of the broader features of modern industry might not be transitional, having indeed good work to do in their time, as the caste system had in its time; but being, like it, serviceable chiefly in leading the way towards better arrangements for a happier age. And it did harm by preparing the way for exaggerated reaction against it.
5. Moreover the doctrine took no account of the manner in which organs are strengthened by being used. Herbert Spencer has insisted with much force on the rule that, if any physical or mental exercise gives pleasure and is therefore frequent, those physical or mental organs which are used in it are likely to grow rapidly. Among the lower animals indeed the action of this rule is so intimately interwoven with that of the survival of the fittest, that the distinction between the two need not often be emphasized. For as it might be guessed a priori, and as seems to be proved by observation, the struggle for survival tends to prevent animals from taking much pleasure in the exercise of functions which do not contribute to their well-being.
But man, with his strong individuality, has greater freedom. He delights in the use of his faculties for their own sake; sometimes using them nobly, whether with the abandon of the great Greek burst of life, or under the control of a deliberate and steadfast striving towards important ends; sometimes ignobly, as in the case of a morbid development of the taste for drink. The religious, the moral, the intellectual and the artistic faculties on which the progress of industry depends, are not acquired solely for the sake of the things that may be got by them; but are developed by exercise for the sake of the pleasure and the happiness which they themselves bring: and, in the same way, that greater factor of economic prosperity, the organization of a well-ordered state, is the product of an infinite variety of motives; many of which have no direct connection with the pursuit of national wealth. (4)
No doubt it is true that physical peculiarities acquired by the parents during their life-time are seldom if ever transmitted to their offspring. But no conclusive case seems to have been made out for the assertion that the children of those who have led healthy lives, physically and morally, will not be born with a firmer fibre than they would have been had the same parents grown up under unwholesome influences which had enfeebled the fibre of their minds and their bodies. And it is certain that in the former case the children are likely after birth to be better nourished, and better trained; to acquire more wholesome instincts; and to have more of that regard for others and that self-respect, which are the mainsprings of human progress, than in the latter case. (5)
It is needful then diligently to inquire whether the present industrial organization might not with advantage be so modified as to increase the opportunities, which the lower grades of industry have for using latent mental faculties, for deriving pleasure from their use, and for strengthening them by use; since the argument that if such a change had been beneficial, it would have been already brought about by the struggle for survival, must be rejected as invalid. Man's prerogative extends to a limited but effective control over natural development by forecasting the future and preparing the way for the next step.
Thus progress may be hastened by thought and work; by the application of the principles of Eugenics to the replenishment of the race from its higher rather than its lower strains, and by the appropriate education of the faculties of either sex: but however hastened it must be gradual and relatively slow. It must be slow relatively to man's growing command over technique and the forces of nature; a command which is making ever growing calls for courage and caution, for resource and steadfastness, for penetrating insight and for breadth of view. And it must be very much too slow to keep pace with the rapid