When I come to die I shall not feel that I have lived in vain. I have seen the earth turn red at evening, the dew sparkling in the morning, and the snow shining under a frosty sun; I have smelt rain after drought, and have heard the stormy Atlantic beat upon the granite shores of Cornwall. Science may bestow these and other joys upon more people than could otherwise enjoy them. If so, its power will be wisely used. But when it takes out of life the moments to which life owes its value, science will not deserve admiration, however cleverly and however elaborately it may lead men among the road to despair. The sphere of values lies outside science, except in so far as science consists in the pursuit of knowledge. Science as the pursuit of power must not obtrude upon the sphere of values, and scientific technique, if it is to enrich human life, must not outweigh the ends which it should serve.

Even more important than knowledge is the life of the emotions. A world without delight and without affection is a world destitute of value. These things the scientific manipulator must remember, and if he does his manipulation may be wholly beneficial. All that is needed is that men should not be so intoxicated by new power as to forget the truths that were familiar to every previous generation. Not all wisdom is new, nor is all folly out of date.