The question is not whether he brought certain truths equally home to us, but how much nearer he brought them than they were before. In my opinion, he united the two extremes of refinement and strength in a higher degree than any other writer whatever. The subtlety of his mind was undoubtedly that which rendered Burke a less popular writer and speaker than he otherwise would have been. It weakened the impression of his observations upon others, but I cannot admit that it weakened the observations themselves; that it took anything from their real weight or solidity. Coarse minds think all that is subtle, futile: that because it is not gross and obvious and palpable to the senses, it is therefore light and frivolous, and of no importance in the real affairs of life; thus making their own confined understandings the measure of truth, and supposing that whatever they do not distinctly perceive, is nothing. Seneca, who was not one of the vulgar, also says, that subtle truths are those which have the least substance in them, and consequently approach nearest to nonentity. But for my own part I cannot help thinking that the most important truths must be the most refined and subtle; for that very reason, that they must comprehend a great number of particulars, and instead of referring to any distinct or positive fact, must point out the combined effects of an extensive chain of causes, operating gradually, remotely, and collectively, and therefore imperceptibly. General principles are not the less true or important because from their nature they elude immediate observation; they are like the air, which is not the less necessary because we neither see nor feel it, or like that secret influence which binds the world together, and holds the planets in their orbits. The very same persons who are the most forward to laugh at all systematic reasoning as idle and impertinent, you will the next moment hear exclaiming bitterly against the baleful effects of new-fangled systems of philosophy, or gravely descanting on the immense importance of instilling sound principles of morality into the mind. It would not be a bold conjecture, but an obvious truism, to say, that all the great changes which have been brought about in the mortal world, either for the better or worse, have been introduced, not by the bare statement of facts, which are things already known, and which must always operate nearly in the same manner, but by the development of certain opinions and abstract principles of reasoning on life and manners, or the origin of society and man's nature in general, which being obscure and uncertain, vary from time to time, and produce corresponding changes in the human mind. They are the wholesome dew and rain, or the mildew and pestilence that silently destroy. To this principle of generalisation all wise lawgivers, and the systems of philosophers, owe their influence.