“In this work I have attempted to treat economy as a calculus of pleasure and pain, and have sketched out, almost irrespective of previous opinions, the form which the science, as it seems to me, must ultimately take.”
Preface To The First Edition, p. 4.
The Theory of Political Economy (1871)
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William Stanley Jevons 69
English economist and logician 1835–1882Related quotes

"Evolution of the Human Brain" (1964), p. 3
interview at John's studio, Billy Klüver, March 1963, as quoted in Jasper Johns, Writings, sketchbook Notes, Interviews, ed. Kirk Varnedoe, Moma New York, 1996, p. 89
1960s

As quoted in The Anthropic Cosmological Principle (1986) by John D. Barrow and Frank J. Tipler, p. 318

No. 66.
Lettres Persanes (Persian Letters, 1721)

Gopinath Kaviraj, Sri Sri Ma Anandamayi: Upadesa O Prasnottara, p. 1
By followers
Source: Lacon (1820) Vol. I; CCCCXXVII (7th Edition, published by Longman, Hurst, Rees, Orme, and Brown, in 1821)

The Differential and Integral Calculus (1836)