For the real price of labor is knowledge and virtue, whereof wealth and credit are signs. These signs, like paper money, may be counterfeited or stolen, but that which they represent, namely, knowledge and virtue, cannot be counterfeited or stolen. These ends of labor cannot be answered but by real exertions of the mind, and in obedience to pure motives. The cheat, the defaulter, the gambler, cannot extort the benefit, cannot extort the knowledge of material and moral nature which his honest care and pains yield to the operative. The law of nature is, Do the thing, and you shall have the power; but they who do not the thing have not the power. Human labor, through all its forms, from the sharpening of a stake to the construction of a city or an epic, is one immense illustration of the perfect compensation of the universe. Everywhere and always this law is sublime. The absolute balance of Give and Take, the doctrine that every thing has its price, and if that price is not paid, not that thing, but something else, is obtained, and that it is impossible to get anything without its price, is not less sublime in the columns of a ledger than in the budgets of states, in the laws of light and darkness, in all the action and reaction of nature. I cannot doubt that the high laws which each man sees ever implicated in those processes with which he is conversant, the stern ethics which sparkle on his chisel-edge, which are measured out by his plumb and foot-rule, which stand as manifest in the footing of the shop-bill as in the history of a state,--do recommend to him his trade, and though seldom named, exalt his business to his imagination. The league between virtue and nature engages all things to assume a hostile front to vice. The beautiful laws and substances of the world persecute and whip the traitor. He finds that things are arranged for truth and benefit, but there is no den in the wide world to hide a rogue. Commit a crime, and the earth is made of glass. There is no such thing as concealment. Commit a crime, and it seems as if a coat of snow fell on the ground, such as reveals in the woods the track of every partridge and fox and squirrel and mole. You cannot recall the spoken word, you cannot wipe out the foot-track, you cannot draw up the ladder, so as to leave no inlet or clew. Always some damning circumstance transpires. The laws and substances of nature, water, snow, wind, gravitation, become penalties to the thief. On the other hand, the law holds with equal sureness for all right action. Love, and you shall be loved. All love is mathematically just, as much as the two sides of an algebraic equation. The good man has absolute good, which, like fire, turns every thing to its own nature, so that you cannot do him any harm; but as the royal armies sent against Napoleon, when he approached, cast down their colors, and from enemies became friends, so do disasters of all kinds, as sickness, offence, poverty, prove benefactors.