Famous quotes containing the words physical and/or force:
“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)
“Do not shut up the young people against their will in a pew, and force the children to ask them questions for an hour against their will.”
—Ralph Waldo Emerson (1803–1882)