“The psycho-physiological hypothesis is both inductively and deductively the sine qua non of the science of psychology.”

Evolution and Ethics (1893)
Context: The history of civilization details the steps by which men have succeeded in building up an artificial world within the cosmos. Fragile reed as he may be, man, as Pascal says, is a thinking reed: there lies within him a fund of energy, operating intelligently and so far akin to that which pervades the universe, that it is competent to influence and modify the cosmic process. In virtue of his intelligence the dwarf bends the Titan to his will. In every family, in every polity that has been established, the cosmic process in man has been restrained and otherwise modified by law and custom; in surrounding nature, it has been similarly influenced by the art of the shepherd, the agriculturist, the artisan. As civilization has advanced, so has the extent of this interference increased; until the organized and highly developed sciences and arts of the present day have endowed man with a command over the course of non-human nature greater than that once attributed to the magicians.... a right comprehension of the process of life and of the means of influencing its manifestations is only just dawning upon us. We do not yet see our way beyond generalities; and we are befogged by the obtrusion of false analogies and crude anticipations. But Astronomy, Physics, Chemistry, have all had to pass through similar phases, before they reached the stage at which their influence became an important factor in human affairs. Physiology, Psychology, Ethics, Political Science, must submit to the same ordeal. Yet it seems to me irrational to doubt that, at no distant period, they will work as great a revolution in the sphere of practice.<!--pp.83-84

Source: Information, The New Language of Science (2003), Chapter 16, Unpacking Information, The computer in the service of physics, p. 138

Source: The Life of the Mind (1971/1978), pp. 34-35.

Source: The Principles of Science: A Treatise on Logic and Scientific Method (1874) Vol. 1, p. 14

p, 642
A History of Experimental Psychology, 1929

Principles of Mathematics (1903), Ch. II: Symbolic Logic, p. 11
1900s

Vol. 1, p. 17
The Foundations of a Creed (1874-5)

Source: Discipline and Punish (1977), Chapter One, The Spectacle of the Scaffold

Broad, C.D. (1926). The philosophy of Francis Bacon: An address delivered at Cambridge on the occasion of the Bacon tercentenary, 5 October, 1926. Cambridge: University Press, p. 67. The quotation is a paraphrase of the concluding sentence in the monograph: May we venture to hope that when Bacon's next centenary is celebrated the great work which he set going will be completed; and that Inductive Reasoning, which has long been the glory of Science, will have ceased to be the scandal of Philosophy?