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A spade may be made of any size, and if the same number of strokes be made in the hour, the requisite exertion will vary nearly as the cube of the length of the blade.

William Stanley Jevons

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William Stanley Jevons
Age: 46 †
Born: 1835
Born: September 1
Died: 1882
Died: August 13
Economist
Philosopher
Photographer
Statistician
City of Liverpool
Jevons
William Stanley
Hours
Vary
Spade
May
Strokes
Cube
Made
Length
Spades
Nearly
Cubes
Size
Requisite
Hour
Blade
Number
Exertion
Numbers
Blades

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PLEASURE and pain are undoubtedly the ultimate objects of the calculus of economics. To satisfy our wants to the utmost with the least effort - to procure the greatest amount of what is desirable at the expense of the least that is undesirable - in other words, to maximize pleasure, is the problem of economics.
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I feel quite unable to adopt the opinion that the moment goods pass into the possession of the consumer they cease altogether to have the attributes of capital.
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The whole result of continued labour is not often consumed and enjoyed in a moment the result generally lasts for a certain length of time. We must then conceive the capital as being progressively uninvested.
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The whole value of science consists in the power which it confers upon us of applying to one object the knowledge acquired from like objects and it is only so far, therefore, as we can discover and register resemblances that we can turn our observations to account.
William Stanley Jevons
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Property is only another name for monopoly.
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A little experience is worth much argument a few facts are better than any theory.
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An isolated man like Alexander Selkirk might feel the benefit of a stock of provisions, tools and other means of facilitating industry, although cut off from traffic, with other men.
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Over-production is not possible in all branches of industry at once, but it is possible in some as compared to others.
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My principal work now lies in tracing out the exact nature and conditions of utility. It seems strange indeed that economists have not bestowed more minute attention on a subject which doubtless furnishes the true key to the problems of economics.
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Economists can never be free of from difficulties unless they will distinguish between a theory and the application of a theory.
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Fertility of imagination and abundance of guesses at truth are among the first requisites of discovery but the erroneous guesses must almost of necessity be many times as numerous as those which prove well founded.
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Labour once spent has no influence on the future value of any article it isgone and lost for ever. In commerce bygones are forever bygones and we are alwaysstarting clearat each moment, judging the values of things with a view to future utility.
William Stanley Jevons
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but, in reality, there is no such thing as an exact science.
William Stanley Jevons
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What capital I give for the spade merely replaces what the manufacturer had already invested in the expectation that the spade would be needed.
William Stanley Jevons
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It is clear that economics, if it is to be a science at all, must be a mathematical science.
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All classes of society are trade unionists at heart, and differ chiefly in the boldness, ability, and secrecy with which they pursue their respective interests.
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One of the most important axioms is, that as the quantity of any commodity, for instance, plain food, which a man has to consume, increases, so the utility or benefit derived from the last portion used decreases in degree. The decrease in enjoyment between the beginning and the end of a meal may be taken as an example.
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There are many portions of economical doctrine which appear to me as scientific in form as they are consonant with facts.
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In matters of philosophy and science authority has ever been the great opponent of truth. A despotic calm is usually the triumph of error. In the republic of the sciences sedition and even anarchy are beneficial in the long run to the greatest happiness of the greatest number.
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Logic should no longer be considered an elegant and learned accomplishment it should take its place as an indispensable study for every well-informed person.
William Stanley Jevons