Famous quotes containing the words requires and/or verification:
“The trail of the serpent reaches into all the lucrative professions and practices of man. Each has its own wrongs. Each finds a tender and very intelligent conscience a disqualification for success. Each requires of the practitioner a certain shutting of the eyes, a certain dapperness and compliance, an acceptance of customs, a sequestration from the sentiments of generosity and love, a compromise of private opinion and lofty integrity.”
—Ralph Waldo Emerson (1803–1882)
“Science is a system of statements based on direct experience, and controlled by experimental verification. Verification in science is not, however, of single statements but of the entire system or a sub-system of such statements.”
—Rudolf Carnap (1891–1970)