I have hitherto spoken of force of thought in general. My views will be given more completely and distinctly, by considering, next, the objects on which this force is to be exerted. These may be reduced to two classes, matter and mind--the physical world which falls under our eyes, and the spiritual world. The working man is particularly called to make matter his study, because his business is to work on it, and he works more wisely, effectually, cheerfully, and honorably, in proportion as he knows what he acts upon, knows the laws and forces of which he avails himself, understands the reason of what he does, and can explain the changes which fall under his eye. Labor becomes a new thing when thought is thrown into it, when the mind keeps pace with the hands. Every farmer should study chemistry, so as to understand the elements or ingredients which enter into soils, vegetation, and manures, and the laws according to which they combine with and are loosened from one another. So, the mechanic should understand the mechanical powers, the laws of motion, and the history and composition of the various substances which he works on. Let me add, that the farmer and the mechanic should cultivate the perception of beauty. What a charm and new value might the farmer add to his grounds and cottage, were he a man of taste! The product of the mechanic, be it great or small, a house or a shoe, is worth more, sometimes much more, if he can succeed in giving it the grace of proportion. In France, it is not uncommon to teach drawing to mechanics, that they may get a quick eye and a sure hand, and may communicate to their works the attraction of beauty. Every man should aim to impart this perfection to his labors. The more of mind we carry into toil, the better. Without a habit of thought, a man works more like a brute or machine than like a man. With it, his soul is kept alive amidst his toils. He learns to fix an observing eye on the processes of his trade, catches hints which abridge labor, gets glimpses of important discoveries, and is sometimes able to perfect his art. Even now, after all the miracles of invention which honor our age, we little suspect what improvements of machinery are to spring from spreading intelligence and natural science among workmen.