"Hot mineral waters come not a-boiling sooner than cold water.
"Hot iron put into cold water soon cools, but becomes hot again.
"There falls usually at Paris, in June, July, and August, as much rain as in the other nine months.
"This seems to be a strong presumption against medicines, that they are mostly disagreeable, and out of the common use of life. For the weak and uncertain operation of the common food, &c. is well known by experience. These others are the better objects of quackery."
The system of philosophy to which the foregoing remarks apply, was published when its author was twenty-six years old, and he completed it in voluntary exile, and in that isolation from the counsel and sympathy of early friends, which is implied by a residence in an obscure spot in a foreign country. While he was framing his metaphysical theory, Hume appears to have permitted no confidential adviser to have access to the workings of his inventive genius; and as little did he take for granted any of the reasonings and opinions of the illustrious dead, as seek counsel of the living. Nowhere is there a work of genius more completely authenticated, as the produce of the solitary labour of one mind; and when we reflect on the boldness and greatness of the undertaking, we have a
picture of self-reliance calculated to inspire both awe and respect. The system seems to be characteristic of a lonely mind—of one which, though it had no enmity with its fellows, had yet little sympathy with them. It has few of the features that characterize a partaker in the ordinary hopes and fears, the joys and sorrows, of humanity; little to give impulse to the excitement of the enthusiast; nothing to dry the tear of the mourner. It exposes to poor human reason her own weakness and nakedness, and supplies her with no extrinsic support or protection. Such a work, coming from a man at the time of life when our sympathies with the world are strongest, and our anticipations brightest, would seem to indicate a mind rendered callous by hardship and disappointment. But it was not so with Hume. His coldness and isolation were in his theories alone; as a man he was frank, warm, and friendly. But the same impulses which gave him resolution to adopt so bold a step, seem at the same time to have armed him with a hard contempt for the opinions of the rest of mankind. Hence, though his philosophy is sceptical, his manner is frequently dogmatical, even to intolerance; and while illustrating the feebleness of all human reasoning, he seems as if he felt an innate infallibility in his own. He afterwards regretted this peculiarity; and in a letter, written apparently at an advanced period of life, we find him deprecating not only the tone of the Inquiry, but many of its opinions. He says:—
"Allow me to tell you, that I never asserted so absurd a proposition as that any thing might arise without a cause. I only maintained that our certainty of the falsehood of that proposition proceeded neither from intuition nor demonstration, but from another
source. That Cæsar existed, that there is such an island as Sicily,—for these propositions, I affirm, we have no demonstration nor intuitive proof,—would you infer that I deny their truth, or even their certainty? There are many different kinds of certainty; and some of them as satisfactory to the mind, though perhaps not so regular as the demonstrative kind.
"Where a man of sense mistakes my meaning, I own I am angry; but it is only with myself, for having expressed my meaning so ill, as to have given occasion to the mistake.
"That you may see I would no way scruple of owning my mistakes in argument, I shall acknowledge (what is infinitely more material) a very great mistake in conduct, viz. my publishing at all the 'Treatise of Human Nature,' a book which pretended to innovate in all the sublimest paths of philosophy, and which I composed before I was five-and-twenty; above all, the positive air which prevails in that book, and which may be imputed to the ardour of youth, so much displeases me, that I have not patience to review it. But what success the same doctrines, better illustrated and expressed, may meet with, adhuc sub judice lis est. The arguments have been laid before the world, and by some philosophical minds have been attended to. I am willing to be instructed by the public; though human life is so short, that I despair of ever seeing the decision. I wish I had always confined myself to the more easy parts of erudition; but you will excuse me from submitting to a proverbial decision, let it even be in Greek."[98:1]