Famous quotes containing the words optical and/or theory:
“There is an optical illusion about every person we meet.”
—Ralph Waldo Emerson (1803–1882)
“There never comes a point where a theory can be said to be true. The most that one can claim for any theory is that it has shared the successes of all its rivals and that it has passed at least one test which they have failed.”
—A.J. (Alfred Jules)