Famous quotes containing the words constructive, set and/or theory:
“Friendship among nations, as among individuals, calls for constructive efforts to muster the forces of humanity in order that an atmosphere of close understanding and cooperation may be cultivated.”
—Franklin D. Roosevelt (1882–1945)
“With all her masculine vigour and glory, Greece fell, gradually atrophied, because one half of her had been, of set purpose, intellectually and politically paralyzed.”
—Tennessee Claflin (1846–1923)
“The struggle for existence holds as much in the intellectual as in the physical world. A theory is a species of thinking, and its right to exist is coextensive with its power of resisting extinction by its rivals.”
—Thomas Henry Huxley (1825–95)
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