The world neither does, nor ever will, accept of any equality between mental and physical labors and abilities; and the only hope of raising the condition and social scale of the working-classes lies not in striving impotently to drag down those naturally, constitutionally and educationally their superiors to the lower level, but by encouraging the inferiors to aspire to the like elevation, to cultivate on every occasion their higher faculties, to aim at the attainment of capacity for head-labor in their degree, to learn to think, and not to act only, to strive, in fact, to resemble less the beasts that perish, and more the men who live forever. Encouragement may do this, kindling the worker to a hope of better things, and showing him that such a hope is not the vain imagination of a dream, but a real, tangible possibility. Making him discontented with his lot; leading him to misapprehend his own position and to undervalue that of his superior, can tend only to render him a very bad member of society, and a very unhappy member of the human family. Fortunately, other and far higher causes are at work, than the Utopian dreams of visionary sophists and the sentimental false philosophy of world-reforming lunatics, for the ameliorating the condition, both physical and social, of the laborer. And one of these--nor that the least--when superadded to the increasing purposes and enlarged principles of the times--will be found, I believe, in the necessity arising from the general use of complicated machines, which is compelling the mechanic and hand-laborer to educate his head as well as to harden his hands; to develop his soul as well as his sinews, and to become himself head-worker no less than handy-craftsman. In this most desirable change, not a false pride and real ignorance of their own real position, but a clear perception and humble estimate of their own deficiencies and of the means of overcoming them, are requisite to the working-classes; and he is their true friend who insists to them on the former and assists them toward the latter--not he who mendaciously and mischievously asserts to them--as is now too frequently done--that a hodman is at least equal if not superior to a Herschel, an Irish ditcher to a Descartes or a Newton, and the meanest stoker that fires up a furnace to him whose intellect combined the various principles, and conceived the vast system, of that motive power which, in the last quarter of a century has revolutionized the world of art and science, joined ocean shores by bridges of almost continuous steamboats, and linked continents together by the iron groves and metallic wires which speed the space-annihilating messengers of steam and electricity from hemisphere to hemisphere unhindered.