Famous quotes containing the words active and/or ingredients:
“How often must I repeat, that I know or am conscious of my own being; and that I myself am not my ideas, but somewhat else, a thinking, active principle that perceives, knows, wills, and operates about ideas?”
—George Berkeley (1685–1753)
“Copernicanism and other essential ingredients of modern science survived only because reason was frequently overruled in their past.”
—Paul Feyerabend (1924–1994)