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John Stuart Mill Quotes about Science

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Solitude in the presence of natural beauty and grandeur is the cradle of thought and aspirations which are not only good for the individual, but which society can ill do without.

Solitude in the presence of natural beauty and grandeur is the cradle of thought and aspirations which are not only good for the individual, but which society can ill do without.

John Stuart Mill
Nature, Science, Solitude
John Stuart Mill (1865). “Principles of Political Economy: With Some of Their Applications to Social Philosophy”, p.454

Education is one of the subjects which most essentially require to be considered by various minds, and from a variety of points of view. For, of all many-sided subjects, it is the one which has the greatest number of sides.

John Stuart Mill
Education, Science, Numbers

... the besetting danger is not so much of embracing falsehood for truth, as of mistaking a part of the truth for the whole.

John Stuart Mill
Truth, Mistake, Science
John Stuart Mill (1873). “Coleridge. M. de Tocqueville on democracy in America. Bailey on Berkeley's theory of vision. Michelets' history of France. The claims of labor. Guizot's essays and lectures on history. Early Grecian history and legend”, p.11

The study of science teaches young men to think, while study of the classics teaches them to express thought.

John Stuart Mill
Science, Men, Thinking

The application of algebra to geometry ... has immortalized the name of Descartes, and constitutes the greatest single step ever made in the progress of the exact sciences.

John Stuart Mill
Science, Names, Progress
John Stuart Mill (1865). “An Examination of Sir William Hamilton's Philosophy and of the Principal Philosophical Questions Discussed in His Writings”, p.531

This is what writers mean when they say that the notion of cause involves the idea of necessity. If there be any meaning which confessedly belongs to the term necessity, it is unconditionalness. That which is necessary, that which must be, means that which will be, whatever supposition we may make in regard to all other things.

John Stuart Mill
Mean, Science, Ideas
John Stuart Mill (1858). “A System of Logic, Ratiocinative and Inductive: Being a Connected View of the Principles of Evidence and the Methods of Scientific Investigation”, p.203

The ends of scientific classification are best answered, when the objects are formed into groups respecting which a greater number of general propositions can be made, and those propositions more important, than could be made respecting any other groups into which the same things could be distributed. ... A classification thus formed is properly scientific or philosophical, and is commonly called a Natural, in contradistinction to a Technical or Artificial, classification or arrangement.

John Stuart Mill
Philosophical, Science, Numbers
"The Collected Works of John Stuart Mill".

If two or more instances of the phenomenon under investigation have only one circumstance in common, the circumstance in which alone all the instances agree is the cause (or effect) of the given phenomenon.

John Stuart Mill
Science, Two, Causes
John Stuart Mill (1858). “A System of Logic, Ratiocinative and Inductive: Being a Connected View of the Principles of Evidence and the Methods of Scientific Investigation”, p.224

It is a law, that every event depends on some law.

John Stuart Mill
Science, Law, Events
"The Collected Works of John Stuart Mill".

It appears, then, to be a condition of a genuinely scientific hypothesis, that it be not destined always to remain an hypothesis, but be certain to be either proved or disproved by.. .comparison with observed facts.

John Stuart Mill
Science, Destiny, Facts
John Stuart Mill (1856). “A System of Logic, Ratiocinative and Inductive: Being a Connected View of the Principles of Evidence and the Methods of Scientific Investigation”, p.293

The cause, then, philosophically speaking, is the sum total of the conditions, positive and negative, taken together; the whole of the contingencies of every description, which being realized, the consequent invariably follows.

John Stuart Mill
Taken, Science, Being Real
John Stuart Mill (1858). “A System of Logic, Ratiocinative and Inductive: Being a Connected View of the Principles of Evidence and the Methods of Scientific Investigation”, p.200

The doctrine called Philosophical Necessity is simply this: that, given the motives which are present to an individual's mind, and given likewise the character and disposition of the individual, the manner in which he will act might be unerringly inferred: that if we knew the person thoroughly, and knew all the inducements which are acting upon him, we could foretell his conduct with as much certainty as we can predict any physical event.

John Stuart Mill
Philosophical, Character, Science
John Stuart Mill (2016). “A System Of Logic, Ratiocinative And Inductive: Mill's Works”, p.852, VM eBooks

Whether moral and social phenomena are really exceptions to the general certainty and uniformity of the course of nature; and how far the methods, by which so many of the laws of the physical world have been numbered among truths irrevocably acquired and universally assented to, can be made instrumental to the gradual formation of a similar body of received doctrine in moral and political science.

John Stuart Mill
Nature, Science, Law
John Stuart Mill (2017). “The Collected Works of John Stuart Mill: Utilitarianism, The Subjection of Women, On Liberty, Principles of Political Economy, A System of Logic, Ratiocinative and Inductive, Memoirs…”, p.1092, e-artnow

The maxim is, that whatever can be affirmed (or denied) of a class, may be affirmed (or denied) of everything included in the class. This axiom, supposed to be the basis of the syllogistic theory, is termed by logicians the dictum de omni et nullo.

John Stuart Mill
Science, Class, Nomenclature
John Stuart Mill (1858). “A System of Logic, Ratiocinative and Inductive: Being a Connected View of the Principles of Evidence and the Methods of Scientific Investigation”, p.117

The process of tracing regularity in any complicated, and at first sight confused, set of appearances, is necessarily tentative; we begin by making any supposition, even a false one, to see what consequences will follow from it ; and by observing how these differ from the real phenomena, we learn what corrections to make in our assumption.

John Stuart Mill
Confused, Real, Science
John Stuart Mill (1856). “A System of Logic, Ratiocinative and Inductive, Being a Connected View of the Principles, and the Methods of Scientific Investigation”, p.16

The validity of all the Inductive Methods depends on the assumption that every event, or the beginning of every phenomenon, must have some cause; some antecedent, upon the existence of which it is invariably and unconditionally consequent.

John Stuart Mill
Science, Events, Causes
John Stuart Mill (1846). “A System of Logic, Ratiocinative and Inductive: Being a Connected View of the Principles of Evidence and the Methods of Scientific Investigation”, p.337

The laws and conditions of the production of wealth partake of the character of physical truths. There is nothing optional or arbitrary in them ... It is not so with the Distribution of Wealth. That is a matter of human institution solely. The things once there, mankind, individually or collectively, can do with them as they like.

John Stuart Mill
Truth, Character, Science
John Stuart Mill “Principles of Political Economy: Abridged with Critical, Bibliographical and Explanatory Notes and a Sketch of the History of Political Economy”, Library of Alexandria

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