“Whereas the whole business of philosophy, diversified as it is, is but one; it being one and the same great scheme, that all philosophers, of all ages and nations, have been conducting, from the beginning of the world”
Preface
The History and Present State of Electricity (1767)
Context: Great conquerors, we read, have been both animated, and also, in a great measure, formed by reading the exploits of former conquerors. Why may not the same effect be expected from the history of philosophy to philosophers? May not even more be expected in this case? The wars of many of those conquerors, who received this advantage from history, had no proper connection with former wars: they were only analogous to them. Whereas the whole business of philosophy, diversified as it is, is but one; it being one and the same great scheme, that all philosophers, of all ages and nations, have been conducting, from the beginning of the world; so that the work being the same, the. labours of one are not only analogous to those of of another, but in an immediate manner subservient to them; and one philosopher succeeds another in the same field; as one Roman proconsul succeeded another in carrying on the same war, and pursuing the same conquests, in the same country. In this case, an intimate knowledge of what has been done before us cannot but greatly facilitate our future progress, if it be not absolutely necessary to it.
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Joseph Priestley 47
English theologian, chemist, educator, and political theori… 1733–1804Related quotes

“The true chemical philosopher sees good in all the diversified forms of the external world.”
The Collected Works of Sir Humphry Davy, Volume IX, Salmonia and Consolation in Travel (1840), Consolation in Travel book section, Chapter Dialogue V. The Chemical Philosopher, p. 361 http://books.google.de/books?id=KDw9AAAAYAAJ&pg=PA362&lpg=PA362&dq=humphry+davy+Every+discovery+opens+a+new+field+for+investigation+of+facts,+shows+us+the+imperfection+of+our+theories.+It+has+justly+been+said,+that+the+greater+the+circle+of+light,+the+greater+the+boundary+of+darkness+by+which+it+is+surrounded.&source=bl&ots=9MZhcfRJFa&sig=UI05WRE5VzJDjfKd7Kf1Cp9B06Y&hl=de&sa=X&ei=WfSvUoG1OsiatAaHq4CIDg&ved=0CEoQ6AEwAw#v=onepage&q=humphry%20davy%20Every%20discovery%20opens%20a%20new%20field%20for%20investigation%20of%20facts%2C%20shows%20us%20the%20imperfection%20of%20our%20theories.%20It%20has%20justly%20been%20said%2C%20that%20the%20greater%20the%20circle%20of%20light%2C%20the%20greater%20the%20boundary%20of%20darkness%20by%20which%20it%20is%20surrounded.&f=false, edited by John Davy, London: Smith, Elder and Co. Cornhill
Context: It is surely a pure delight to know, how and by what processes this earth is clothed with verdure and life, how the clouds, mists and rain are formed, what causes all the changes of this terrestrial system of things, and by what divine laws order is preserved amidst apparent confusion. It is a sublime occupation to investigate the cause of the tempest and the volcano, and to point out their use in the economy of things, — to bring the lightning from the clouds and make it subservient to our experiments, — to produce as it were a microcosm in the laboratory of art, and to measure and weigh those invisible atoms, which, by their motions and changes according to laws impressed upon them by the Divine Intelligence, constitute the universe of things. The true chemical philosopher sees good in all the diversified forms of the external world. Whilst he investigates the operations of infinite power guided by infinite wisdom, all low prejudices, all mean superstitions disappear from his mind. He sees man an atom amidst atoms fixed upon a point in space; and yet modifying the laws that are around him by understanding them; and gaining, as it were, a kind of dominion over time, and an empire in material space, and exerting on a scale infinitely small a power seeming a sort of shadow or reflection of a creative energy, and which entitles him to the distinction of being made in the image of God and animated by a spark of the divine mind. Whilst chemical pursuits exalt the understanding, they do not depress the imagination or weaken genuine feelings; whilst they give the mind habits of accuracy, by obliging it to attend to facts, they likewise extend its analogies; and, though conversant with the minute forms of things, they have for their ultimate end the great and magnificent objects of nature. They regard the formation of a crystal, the structure of a pebble, the nature of a clay or earth; and they apply to the causes of the diversity of our mountain chains, the appearances of the winds, thunder-storms, meteors, the earthquake, the volcano, and all those phenomena which offer the most striking images to the poet and the painter. They keep alive that inextinguishable thirst after knowledge, which is one of the greatest charactics of our nature; — for every discovery opens a new field for investigation of facts, shows us the imperfection of our theories. It has justly been said, that the greater the circle of light, the greater the boundary of darkness by which it is surrounded.

2013, Fifth State of the Union Address (February 2013)
Context: I realize that tax reform and entitlement reform will not be easy. The politics will be hard for both sides. None of us will get 100 percent of what we want. But the alternative will cost us jobs, hurt our economy, visit hardship on millions of hardworking Americans. So let’s set party interests aside and work to pass a budget that replaces reckless cuts with smart savings and wise investments in our future. And let’s do it without the brinksmanship that stresses consumers and scares off investors. The greatest nation on Earth cannot keep conducting its business by drifting from one manufactured crisis to the next. We can’t do it. Let’s agree right here, right now to keep the people’s government open, and pay our bills on time, and always uphold the full faith and credit of the United States of America. The American people have worked too hard, for too long, rebuilding from one crisis to see their elected officials cause another.

Part I, Essay 9: Of The Parties of Great Britain
Essays, Moral, Political, and Literary (1741-2; 1748)
Context: In all ages of the world, priests have been enemies to liberty; and it is certain, that this steady conduct of theirs must have been founded on fixed reasons of interest and ambition. Liberty of thinking, and of expressing our thoughts, is always fatal to priestly power, and to those pious frauds, on which it is commonly founded; and, by an infallible connexion, which prevails among all kinds of liberty, this privilege can never be enjoyed, at least has never yet been enjoyed, but in a free government.

Official statement as Minister of the Blockade (31 August 1917)
Context: The great difficulty of all schemes for leagues of nations and the like has been to find an effective sanction against nations determined to break the peace.
I will not now discuss at length the difficulties of joint armed action, but every one who has studied the question knows they are very great. It may be, however, that a league of nations, properly furnished with machinery to enforce the financial, commercial, and economic isolation of any nation determined to force its will upon the world by mere violence, would be a real safeguard for the peace of the world. In any case that is a subject that may well be studied by those sincerely anxious to put an end to the present system of International anarchy.

Novalis (1829)
Context: The true philosophical Act is annihilation of self (Selbsttodtung); this is the real beginning of all Philosophy; all requisites for being a Disciple of Philosophy point hither. This Act alone corresponds to all the conditions and characteristics of transcendental conduct.

Query 28 : Are not all Hypotheses erroneous in which Light is supposed to consist of Pression or Motion propagated through a fluid medium?
Opticks (1704)
Context: To make way for the regular and lasting Motions of the Planets and Comets, it's necessary to empty the Heavens of all Matter, except perhaps some very thin Vapours, Steams or Effluvia, arising from the Atmospheres of the Earth, Planets and Comets, and from such an exceedingly rare Æthereal Medium … A dense Fluid can be of no use for explaining the Phænomena of Nature, the Motions of the Planets and Comets being better explain'd without it. It serves only to disturb and retard the Motions of those great Bodies, and make the frame of Nature languish: And in the Pores of Bodies, it serves only to stop the vibrating Motions of their Parts, wherein their Heat and Activity consists. And as it is of no use, and hinders the Operations of Nature, and makes her languish, so there is no evidence for its Existence, and therefore it ought to be rejected. And if it be rejected, the Hypotheses that Light consists in Pression or Motion propagated through such a Medium, are rejected with it.
And for rejecting such a Medium, we have the authority of those the oldest and most celebrated philosophers of ancient Greece and Phoenicia, who made a vacuum and atoms and the gravity of atoms the first principles of their philosophy, tacitly attributing Gravity to some other Cause than dense Matter. Later Philosophers banish the Consideration of such a Cause out of natural Philosophy, feigning Hypotheses for explaining all things mechanically, and referring other Causes to Metaphysicks: Whereas the main Business of natural Philosophy is to argue from Phenomena without feigning Hypotheses, and to deduce Causes from Effects, till we come to the very first Cause, which certainly is not mechanical.

Ch. 7.