“Since a great part of those Learned Men, especially Physicians who have discerned the defects of the vulgar Philosophy, but are not yet come to understand and relish the Corpuscularian, have slid into the Doctrine of the Chymists; and since the Spagyrists are wont to pretend to make out all the Qualities of bodies from the Predominancy of some one of their three Hypostatical Principles, I suppose it may both keep my opinion from appearing too presumptuous, and (which is far more considerable) may make way for the fairer Reception of the Mechanical Hypothesis about Qualities, if I here intimate (though but briefly and in general) some of those defects, that I have observed in Chymists Explications of Qualities.”

Source: Of the Imperfection of The Chymist's Doctrine of Qualities (1675)

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Robert Boyle21

English natural philosopher, chemist, physicist, and invent… 1627–1691

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“But I will not... trouble you with what I have largely discoursed in the Sceptical Chymist, to call in question the grounds on which Chymists assert, that all mixt bodies are compounded of Salt, Sulphur, and Mercury. For it may suffice me now to tell you that, whatsoever they may be able to obtain from other bodies, it does not appear by Experience, which is the grand, if not the onely, Argument they rely on, that all mixt bodies that have Qualities consist of their tria prima, since they have not been able, that we know, truly, and without new Compositions, to resolve into those three, either Gold, or Silver, or Crystal, or Venetian Talck, or some other bodies, that I elsewhere name; & yet these bodies are endowed with divers Qualities, as the two former with Fusibleness and Malleability, and all of them with Weight and Fixity; so that in these and the like bodies, whence Chymisats have not made it yet appear, that their Salt, Sulphur and Mercury, can be truly and adequately separated, 'twill scarce be other than precarious to derive the malleableness, colour, and other Qualities of such bodies from those Principles.”

Robert Boyle (1627–1691) English natural philosopher, chemist, physicist, and inventor

Of the Imperfection of The Chymist's Doctrine of Qualities (1675)

“It is somewhat strange to me, that neither the Spagyrists themselves, nor yet their Adversaries, should have taken notice that Chymists have rather supposed than evinced, that the Analysis of bodies by fire, or even that at least some Analysis is the onely instrument of investigating what Ingredients mixt bodies are made up of, since in divers cases That may be discovered by Composition as well as by Resolution; as it may appear, that Vitriol consists of metalline parts (whether Martial, or Venereal, or both) associated by Coagulation with acid ones, one may, I say, discover this as well by making true Vitriol with Spirit (improperly called Oil) of Sulphur, or that of Salt, as by distilling or Resolving Vitriol by the fire.”

Robert Boyle (1627–1691) English natural philosopher, chemist, physicist, and inventor

Of the Imperfection of The Chymist's Doctrine of Qualities (1675)

“I need not tell you, what complaints the more candid and judicious of the Chymists themselves are wont to make of those boasters, that confidently pretend, that they have extracted the salt or sulphur of quicksilver, when they have disguised it by additaments, wherewith it resembles the concretes, whose names are given it; whereas by a skilful and rigid examen, it may be easily enough stripped of its disguises, and made to appear again in the pristine form of running mercury. The pretended salts and sulphurs being so far from being elementary parts extracted out of the body of mercury, that they are rather… de-compound bodies, made up of the whole metal and the menstruum, or other additaments employed to disguise it.”

Robert Boyle book The Sceptical Chymist

Part I
The Sceptical Chymist (1661)

“This opinion… appears to be ancient… that the one, excess and defect, are the principles of things… It is not… probable that there are more than three principles… [E]ssence is one certain genus of being: so that principles will differ from each other in prior and posterior alone, but not in genus, for in one genus there is always one contrariety, and all contrarieties appear to be referred to one. That there is neither one element, therefore, nor more than two or three, is evident.”

Aristotle book Physics

Book I, Ch. VII, pp. 62-63.
Physics

““But you're a Philosopher!” Julian exclaimed at one point. “This is Philosophy, not Religion, since you rule out supernatural beings—you know that as well as I do!”
“I suppose it is Philosophy, looked at from one angle,” Stepney conceded. “But there’s no money in Philosophy, Julian. Religion is far more lucrative as a career.””

Robert Charles Wilson book Julian Comstock: A Story of 22nd-Century America

Source: Julian Comstock: A Story of 22nd-Century America (2009), p. 338

“Learning does not make one learned: there are those who have knowledge and those who have understanding. The first requires memory and the second philosophy.”

Alexandre Dumas book The Count of Monte Cristo

Source: The Count of Monte Cristo

“Should my notion be true, a vast mass of technicalities may be swept from our logical text-books, and yet the small remaining part of logical doctrine will prove far more useful than all the learning of the Schoolmen.”

William Stanley Jevons (1835–1882) English economist and logician

Preface
The Substitution of Similars, The True Principles of Reasoning (1869)
Context: The new and wonderful results of the late Dr. Boole's mathematical system of Logic appear to develop themselves as most plain and evident consequences of the self-same process of substitution, when applied to the Primary Laws of Thought. Should my notion be true, a vast mass of technicalities may be swept from our logical text-books, and yet the small remaining part of logical doctrine will prove far more useful than all the learning of the Schoolmen.

“There are some mixt bodies, from which it has not been yet made appear, that any degree of fire can separate either salt, or sulphur, or mercury, much less all the three. The most obvious instance of this truth is gold, which is a body so fixed, and wherein the elementary ingredients (if it have any) are so firmly united to each other, that we find not in the operations, wherein gold is exposed to the fire, how violent soever, that it does discernably so much as lose of its fixedness or weight, so far is it from being dissipated into those principles, whereof one at least is acknowledged to be fugitive enough.”

Robert Boyle book The Sceptical Chymist

Part I
The Sceptical Chymist (1661)

“I wish to propose a doctrine which may, I fear, appear wildly paradoxical and subversive. The doctrine in question is this: that it is undesirable to believe a proposition when there is no ground whatever for supposing it true. I must, of course, admit that if such an opinion became common it would completely transform our social life and our political system; since both are at present faultless, this must weigh against it.”

Carl Sagan book Contact

Source: Contact (1985), Chapter 2 (p. 15, quoting Bertrand Russell)

“Art is simultaneously particular and general. This is a real dichotomy. The great thing about proportion, one aspect of art, is that it is both extremes at once. The level of quality of a work can usually be established by the extent of the polarity between its generality and particularity. Or, to state the idea a little too simply, the better the work, the more diverse its aspects. The nature of the general aspects and the particular ones changes from artist to artist and especially from time to time, since the changes are due to broad changes in philosophy. This change is the essential change in art, determining its purpose and appearance”

Donald Judd (1928–1994) artist

Source: 1980, "Art and Architecture," 1987, p. 177

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