Famous quotes containing the words theories and/or defenses:
“The wise man regulates his conduct by the theories both of religion and science. But he regards these theories not as statements of ultimate fact but as art-forms.”
—J.B.S. (John Burdon Sanderson)
“We are a nation of politicians, concerned about the outmost defenses only of freedom. It is our children’s children who may perchance be really free.”
—Henry David Thoreau (1817–1862)