I must study politics and war that my sons may have liberty to study mathematics and philosophy.
John AdamsThere are two factors in American politics that may seem strange to Europeans: race and religion.
P. J. O'RourkeEvery word or concept, clear as it may seem to be, has only a limited range of applicability.
Werner HeisenbergThe familiar material objects may not be all that is real, but they are admirable examples.
Willard Van Orman Quine