“The theory which follows is entirely based on a calculus of pleasure and pain; and the object of economics is to maximize happiness by purchasing pleasure, as it were, at the lowest cost of pain.” PainPleasureObjectsTheoryCostEconomicsLowestCalculusPain And PleasurePurchasing Book:The Theory of Political Economy Source: The Theory of Political Economy
“The effects of heat are subject to constant laws which cannot be discovered without the aid of mathematical analysis. The object of the theory is to demonstrate these laws; it reduces all physical researches on the propagation of heat, to problems of the integral calculus, whose elements are given by experiment. No subject has more extensive relations with the progress of industry and the natural sciences; for the action of heat is always present, it influences the processes of the arts, and occurs in all the phenomena of the universe.” ArtProblemActionLawUniverseGivenProcessNaturalProgressInfluenceSubjectsEffectsObjectsTheoryIndustryElementsResearchRelationConstantAidsExperimentsMathematicalAnalysisHeatCalculusNatural SciencePropagationMathematical AnalysisIntegral Calculus Author:Joseph Fourier
“A month's intelligent instruction in the theory of numbes ought to be twice as instructive, twice as useful, and at least 10 times as entertaining as the same amount of 'calculus for engineers'.” TheoryMonthsOughtAmountIntelligentInstructionEntertainingEngineersCalculus Author:G. H. Hardy