“It is known to all persons who are conversant in experimental philosophy, that there are many little attentions and precautions necessary to be observed in the conducting of experiments, which cannot well be described in words, but which it is needless to describe, since practice will necessarily suggest them; though, like all other arts in which the hands and fingers are made use of, it is only much practice that can enable a person to go through complex experiments, of this or any kind, with ease and readiness.”
Experiments and Observations of Different Kinds of Air (1775)
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Joseph Priestley 47
English theologian, chemist, educator, and political theori… 1733–1804Related quotes

Source: The Limits of Evolution, and Other Essays, Illustrating the Metaphysical Theory of Personal Ideaalism (1905), The Limits of Evolution, p.17-8

Prismatic and Diffraction Spectra: Memoirs (1899) Tr. & Ed. J. S. Ames p. 10

Kant, Immanuel (1996), page 203
Anthropology from a Pragmatic Point of View (1798)
Ch 20
A Canticle for Leibowitz (1959), Fiat Lux
Context: Reasoning which touches experimental reality nowhere is the business of angelologists and theologians, not of physical scientists. And yet such papers as these describe systems which touch our experience nowhere. Were they within the experimental reach of the ancients? Certain references tend to indicate it. One paper refers to elemental transmutation — which we just recently established as theoretically impossible — and then it says — 'experiment proves.' But how?
It may take generations to evaluate and understand some of these things. It is unfortunate that they must remain here in this inaccessible place, for it will take a concentrated effort by numerous scholars to make meaning of them.
George Brecht, 1957/58, cited in: George Brecht, Alfred M. Fischer (2005). George Brecht: events : eine Heterospektive. p. 224

Hooke's Diary, as quoted by Alexander Bryson, F.S.A., Scotland, "Exposition of the Mechanical Inventions of Dr Robert Hooke." The Edinburgh New Philosophical Journal, Vol. 4 https://books.google.com/books?id=R15KAAAAcAAJ (1856) pp. 13-14