Part 7

Ibid.

Footnote 21:

John Kepler, a native of Wiel in the duchy of Wirtemberg, in Germany, became as celebrated for the consequences he drew from the observations of Tycho, as the latter was for the vast mass of astronomical materials he had prepared. This eminent, though somewhat “whimsical” astronomer, was born the 27th of December, 1571, and died at the age of fifty-nine years.

Footnote 21a:

Ritt. Orat.

Footnote 22:

“Before his (Bacon’s) time, philosophy was fettered by forms and syllogisms. The logics of Aristotle held the human mind in bondage for nearly two thousand years; a miserable jugglery, which was fitted to render all truth problematical, and which disseminated a thousand errors, but never brought to light one useful piece of knowledge.”—Ld. Woolhousie’s Memoirs of the Life and Writings of Ld. Kames.

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The objects of a genuine philosophy, are the discovery and promulgation of the truths which emanate from a knowledge of the laws of nature, in relation to the material world, and the inseparable influence of those truths, consequent on an acquaintance with them, in giving a right direction to the moral faculty of man. The intimate connexion subsisting between natural and moral science, is indubitable; and it is equally certain, that the accordant order, fitness and rectitude, which unite into one glorious plan of wisdom, goodness and power, all portions of creation, intellectual and sensitive as well as material, must rest on the same unerring principles. The infinite variety and boundless extent of nature’s works constitute a sublime system; manifesting a correspondent perfection in the design, and all-bountiful dispensation of good in its purposes. The Almighty First Cause has founded this system on immutable principles; wherein truth, in relation to the moral world, may be considered as its basis,—as fitness is, when applied to the constitution of the natural world. These are, respectively, the correlatives of the one and the other: and the unity of design apparent in the whole system, plainly indicates the connexion that subsists, in the nature of things, between moral virtue, which is the result of a right perception of truth, and the fitness and order, to which all the operations of the material universe conform.—Towards an investigation of these things, the researches of the great American philosopher were eagerly directed: such were the objects of his unwearied pursuit; and such were the views entertained by him, of the utility and importance of those sublime branches of knowledge, which he cultivated so ardently and successfully.

Footnote 23:

It is observed by an eminent philosopher of the present day, that “The more the phænomena of the universe are studied, the more distinctly their connexion appears, the more simple their causes, the more magnificent their design, and the more wonderful the wisdom and power of their Author.” (See Elements of Chymical Philosophy, by sir Humphrey Davy, LLD. Sec. R. S.)

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Footnote 24:

On looking into Maclaurin’s Account of Sir Isaac Newton’s Philosophical Discoveries, since penning the above, the writer of these Memoirs was much gratified by the perusal of the following passage, in the last chapter of that valuable work; wherein its author treats “Of the Supreme Author and Governor of the Universe, the True and Living God.” The writer is induced to add it in a note, to his own reflections on the same subject, such as he has ventured to offer them in the text; presuming that the authority of so eminent a philosopher as Mr. Maclaurin will give weight to what he has himself advanced; so far, at least, as there may appear to be some coincidence of sentiment on the subject.

“The plain argument for the existence of the Deity, obvious to all and carrying irresistable conviction with it, is from the evident contrivance and fitness of things for one another, which we meet with throughout all parts of the universe. There is no need of nice and subtle reasonings in this matter: a manifest contrivance immediately suggests a contriver. It strikes us like a sensation; and artful reasonings against it may puzzle us, but it is without shaking our belief. No person, for example, that knows the principles of optics, and the structure of the eye, can believe that it was formed without skill in that science; or that the ear was formed, without the knowledge of sounds:”—“All our accounts of nature are full of instances of this kind. The admirable and beautiful order of things, for final causes, exalt our idea of the Contriver: the unity of design shews him to be One. The great motions in the system, performed with the same facility as the least, suggest his Almighty Power; which gave motion to the earth and the celestial bodies, with equal ease as to the minutest particles. The subtilty of the motions and actions in the internal parts of bodies, shews that His influence penetrates the inmost recesses of things, and that He is equally active and present every where. The simplicity of the laws that prevail in the world, the excellent disposition of things, in order to obtain the best ends, and the beauty which adorns the works of nature, far superior to any thing in art, suggest His consummate Wisdom. The usefulness of the whole scheme, so well contrived for the intelligent beings that enjoy it, with the internal disposition and moral structure of those beings themselves, shew His unbounded goodness. These are arguments which are sufficiently open to the views and capacities of the unlearned, while at the same time they acquire new strength and lustre from the discoveries of the learned. The Deity’s acting and interposing in the universe, shew that He governs it, as well as formed it; and the depth of His counsels, even in conducting the material universe, of which a great part surpasses our knowledge, keeps up an inward veneration and awe of this great Being, and disposes us to receive what may be otherwise revealed to us, concerning Him.”

Footnote 25:

Mr. Cotes, in his preface to the second edition of Sir Isaac Newton’s Principia, exposes the folly of those depraved dreamers in philosophy, “the sordid dregs of the most impure part of mankind,” who strive to maintain, that the constitution of the world is not derived from the will of God, but from a certain necessity of nature; that all things are governed by fate, not by Providence; and that matter, by necessity of nature, has existed always and every where, and is infinite and eternal. He then adds:—“We may now, therefore, take a nearer view of nature in her glory, and contemplate her in a most entertaining manner: and withal, more zealously than ever, pay our worship and veneration to the Creator and Lord of the Universe; which is the principal advantage of philosophy. He must be blind who, from the most excellent and most wise structure of the creatures, does not presently see the infinite wisdom and goodness of their Creator: and he must be mad, who will not own those attributes.”

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The enlightened part of the people have, in every civilized nation and in all ages, very rationally valued themselves on their great men. It is both useful and proper to commemorate the renown of such as have approved themselves, in an eminent degree, Benefactors of Mankind. The Life, therefore, of so distinguished a Philosopher as RITTENHOUSE, must be expected to interest the feelings, as well as the curiosity, of the good and the wise, not only of our own country but of foreign nations.

With respect to the usefulness and importance of that majestic science, which was the favourite study and principal object of the pursuit of our philosopher, during a life of ordinary extent but of very extraordinary attainments and character, something may with propriety be said, with a view to an illustration of the subject. And among other evidence, which, it is presumed, may not be unaptly adduced on the occasion, the Memorialist will cite in the first place, as well as occasionally afterwards, the sentiments of a distinguished foreign astronomer, whose abilities and erudition rendered him eminently qualified to decide, in a discussion of this nature: He shall be made to speak for himself, though not in his own tongue; the great work from which the quoted extracts are made, being written in French.

Among the numerous and important advantages, then, resulting from astronomy, noticed by the celebrated Lalande (in the preface to his book, entitled Astronomie,) he remarks that it is well known, that besides the tendency of this science to dissipate many vulgar errors and prejudices, cosmography and geography cannot go on, but by its means: that the discovery of the satellites of Jupiter has given greater perfection to our geographical and marine charts, than they could have attained by ten thousand years of navigation and voyages; and, that when their theory shall become still better known, the method of determining the longitude at sea will be more exact and more easy.

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Footnote 26:

“A man would deceive himself,” says Lalande, “in believing he could be a philosopher, without the study of the natural sciences. To be wise, not by weakness, but by principles, it is necessary that, to be able to reflect and think with vigour, we be freed from those prejudices which deceive the judgment, and which oppose themselves to the development of reason and of genius. Pythagoras would not have any disciples, who had not studied Mathematics: over his door was to be read, that “no one was to enter, unless he were a geometrician.”—Morals would be less sure, and less attractive for us, if they were to be founded on ignorance or on error.

“Ought we,” he asks, “to consider as of no importance the advantage of being freed from the misfortunes of ignorance? Is it possible to observe, without a feeling of compassion and even of shame, the stupidity of those, who formerly believed, that by making a great vociferation, during an eclipse of the Moon, they furnished relief to the sufferings of that (imagined) goddess; or, that these eclipses were produced by enchantment?”

“Cum frustra resonant æra auxiliaria Lunæ.” Met. iv. 333.

Reyas, in the dedication of his Commentaries on the Planisphere to the Emperor Charles V. mentions a curious historical fact, in illustration of the effects of that superstition, derived from ignorance, which astronomy has banished from the civilized world. It is thus related by Lalande:—“Christopher Columbus, when commanding the army which Ferdinand, king of Spain, had sent to Jamaica, some short time after the discovery of that island, experienced so great a scarcity of provisions, that no hope remained of saving his army, which he expected to be soon at the mercy of the savages. An approaching eclipse of the moon furnished this able man with the means of extricating himself from his embarrassment: he let the chief of the savages know, that if they should not, in a few hours, send him all he asked for, he would oppress them with the greatest calamities; and that he would begin by depriving the moon of her light. At first, they contemned his menaces; but, when they saw that the moon began, in reality, to disappear, they were seized with terror; they carried all they had to the general, and came themselves to implore forgiveness.”

Comets were formerly, even in civilized nations, another great cause of consternation among the people; and one, also, which a knowledge of astronomy has at length divested of its terrors, by removing the source of those superstitious errors, a grossly mistaken notion of the nature of those phænomena. “We are sorry to find,” says Lalande, “such strange prejudices, not only in Homer [Iliad iv. 75.] but even in the most beautiful poem of the sixteenth century; whereby means are furnished of perpetuating our errors—