The effect of any writing on the public mind is mathematically measurable by its depth of thought. How much water does it draw? If it awaken you to think, if it lift you from your feet with the great voice of eloquence, then the effect is to be wide, slow, permanent, over the minds of men; if the pages instruct you not, they will die like flies in the hour. The way to speak and write what shall not go out of fashion is to speak and write sincerely. The argument which has not power to reach my own practice, I may well doubt will fail to reach yours. But take Sidney's maxim:--"Look in thy heart, and write." He that writes to himself writes to an eternal public. That statement only is fit to be made public which you have come at in attempting to satisfy your own curiosity. The writer who takes his subject from his ear and not from his heart, should know that he has lost as much as he seems to have gained, and when the empty book has gathered all its praise, and half the people say, 'What poetry! what genius!' it still needs fuel to make fire. That only profits which is profitable. Life alone can impart life; and though we should burst we can only be valued as we make ourselves valuable. There is no luck in literary reputation. They who make up the final verdict upon every book are not the partial and noisy readers of the hour when it appears, but a court as of angels, a public not to be bribed, not to be entreated and not to be overawed, decides upon every man's title to fame. Only those books come down which deserve to last. Gilt edges, vellum and morocco, and presentation-copies to all the libraries will not preserve a book in circulation beyond its intrinsic date. It must go with all Walpole's Noble and Royal Authors to its fate. Blackmore, Kotzebue, or Pollok may endure for a night, but Moses and Homer stand for ever. There are not in the world at any one time more than a dozen persons who read and understand Plato,--never enough to pay for an edition of his works; yet to every generation these come duly down, for the sake of those few persons, as if God brought them in his hand. "No book," said Bentley, "was ever written down by any but itself." The permanence of all books is fixed by no effort, friendly or hostile, but by their own specific gravity, or the intrinsic importance of their contents to the constant mind of man. "Do not trouble yourself too much about the light on your statue," said Michael Angelo to the young sculptor; "the light of the public square will test its value."

In like manner the effect of every action is measured by the depth of the sentiment from which it proceeds. The great man knew not that he was great. It took a century or two for that fact to appear. What he did, he did because he must; it was the most natural thing in the world, and grew out of the circumstances of the moment. But now, every thing he did, even to the lifting of his finger or the eating of bread, looks large, all-related, and is called an institution.

These are the demonstrations in a few particulars of the genius of nature; they show the direction of the stream. But the stream is blood; every drop is alive. Truth has not single victories; all things are its organs,--not only dust and stones, but errors and lies. The laws of disease, physicians say, are as beautiful as the laws of health. Our philosophy is affirmative and readily accepts the testimony of negative facts, as every shadow points to the sun. By a divine necessity every fact in nature is constrained to offer its testimony.

Human character evermore publishes itself. The most fugitive deed and word, the mere air of doing a thing, the intimated purpose, expresses character. If you act you show character; if you sit still, if you sleep, you show it. You think because you have spoken nothing when others spoke, and have given no opinion on the times, on the church, on slavery, on marriage, on socialism, on secret societies, on the college, on parties and persons, that your verdict is still expected with curiosity as a reserved wisdom. Far otherwise; your silence answers very loud. You have no oracle to utter, and your fellow-men have learned that you cannot help them; for oracles speak. Doth not Wisdom cry and Understanding put forth her voice?

Dreadful limits are set in nature to the powers of dissimulation. Truth tyrannizes over the unwilling members of the body. Faces never lie, it is said. No man need be deceived who will study the changes of expression. When a man speaks the truth in the spirit of truth, his eye is as clear as the heavens. When he has base ends and speaks falsely, the eye is muddy and sometimes asquint.

I have heard an experienced counsellor say that he never feared the effect upon a jury of a lawyer who does not believe in his heart that his client ought to have a verdict. If he does not believe it his unbelief will appear to the jury, despite all his protestations, and will become their unbelief. This is that law whereby a work of art, of whatever kind, sets us in the same state of mind wherein the artist was when he made it. That which we do not believe we cannot adequately say, though we may repeat the words never so often. It was this conviction which Swedenborg expressed when he described a group of persons in the spiritual world endeavoring in vain to articulate a proposition which they did not believe; but they could not, though they twisted and folded their lips even to indignation.

A man passes for that he is worth. Very idle is all curiosity concerning other people's estimate of us, and all fear of remaining unknown is not less so. If a man know that he can do any thing,--that he can do it better than any one else,--he has a pledge of the acknowledgment of that fact by all persons. The world is full of judgment-days, and into every assembly that a man enters, in every action he attempts, he is gauged and stamped. In every troop of boys that whoop and run in each yard and square, a new-comer is as well and accurately weighed in the course of a few days and stamped with his right number, as if he had undergone a formal trial of his strength, speed and temper. A stranger comes from a distant school, with better dress, with trinkets in his pockets, with airs and pretensions; an older boy says to himself, 'It's of no use; we shall find him out to-morrow.' 'What has he done?' is the divine question which searches men and transpierces every false reputation. A fop may sit in any chair of the world nor be distinguished for his hour from Homer and Washington; but there need never be any doubt concerning the respective ability of human beings. Pretension may sit still, but cannot act. Pretension never feigned an act of real greatness. Pretension never wrote an Iliad, nor drove back Xerxes, nor christianized the world, nor abolished slavery.