I do not think either caution unneeded at the present time. As the sphere of human knowledge enlarges, it becomes more and more necessary, that each should make choice of his pursuit and concentrate himself on this. He should make his choice, and he should believe in his work. No branch of study is contemptible, none is fruitless. Each has its place, each conduces to the well-being of the whole. ‘Nay, much more those members of the body, which seem to be more feeble, are necessary.’ Not to make a brilliant display, not to satisfy an appetite for diffusive reading, not to dissipate our intellectual energies, but to achieve something, to add something—however little—to the store of human knowledge—this should be the aim of all.