To What Extent Useful.—Therefore, whether psychological observation is more an advantage than a disadvantage to mankind may always remain undetermined: but there is no doubt that it is necessary, because science can no longer dispense with it. Science, however, recognizes no considerations of ultimate goals or ends any more than nature does; but as the latter duly matures things of the highest fitness for certain ends without any intention of doing it, so will true science, doing with ideas what nature does with matter,²⁰ promote the purposes and the welfare of humanity, (as occasion may afford, and in many ways) and attain fitness [to ends]—but likewise without having intended it.

He to whom the atmospheric conditions of such a prospect are too wintry, has too little fire in him: let him look about him, and he will become sensible of maladies requiring an icy air, and of people who are so “kneaded together” out of ardor and intellect that they can scarcely find anywhere an atmosphere too cold and cutting for them. Moreover: as too serious individuals and nations stand in need of trivial relaxations; as others, too volatile and excitable require onerous, weighty ordeals to render them entirely healthy: should not we, the more intellectual men of this age, which is swept more and more by conflagrations, catch up every cooling and extinguishing appliance we can find that we may always remain as self contained, steady and calm as we are now, and thereby perhaps serve this age as its mirror and self reflector, when the occasion arises?