_Hinc ilia lachrymae._ This is why a question apparently of pure science turns out practically so full of inward heartburning and mutual reviling. Neither theology nor science is competent to the philosophic recognition of man's associated destiny, and hence have neither of them the secret of those perturbations which ever and anon gloom our political atmosphere and shut out to the eye of sensuous thought the entire future of the race. Philosophy alone possesses this secret, because it alone perceives that all our political, civil, and even domestic broils grow out of this identical warfare between men's religions and scientific convictions,--have no other source than that persistent insubmission which the interests of force, as represented by priesthoods and governments, are under to the interests of freedom, represented by society. Philosophy mediates between the religious and secular thought of mankind, by making the sphere of God's universal action identical with that of man's organic necessities, and the sphere of His specific action identical with that of man's moral freedom: so harmonizing the two in one subject. Philosophy alone, in short, is competent to the future of human destiny, because it alone adjusts the relation of morals to physics, alone adjusts the specific interests avouched by religion with the universal interests avouched by science. And its competence is owing to this fact exclusively, that it alone apprehends or appreciates the distinctively social destiny of man, a destiny in which the interests of the most intense and exquisite freedom or individuality are bound up with the interests of the most imperious necessity or community,--or, what is the same thing, which presents every man no longer in subjective or moral, but only in objective or aesthetic, contrast with his kind, that so the general harmony may be inflamed by the widest partial diversity. Thus philosophy bids society recognise itself at once as God's perfect work on earth,--bids it rise to instant self-consciousness as the real Divine substance which Church and State have only feebly typified, and put on all Divine strength and peace as its rightful breastplate and ornament. For if all these fleeting phenomenal discords among men, upon which our existing civilization proceeds, claim no longer an absolute, but only a relative Divine sanction, a sanction in relation to the interests of human society exclusively, what remains for society to do but to organize itself afresh upon an eternal basis, that is, upon the acknowledgment of a force in man infinitely transcending his moral force, because it forever unites instead of disjoining him with God, being the force of spontaneous or productive action? _An Address on the Limits of Education, read before the Massachusetts Institute of Technology_, November 16th, 1865. By JACOB BIGELOW, M. D. Boston: E. P. Dutton & Co.