Every great mathematical theory begins as a heresy and ends as a dogma.
每一個(gè)偉大的數(shù)學(xué)理論最初都是異端邪說，最終卻成了教條。
"To travel is to discover that everyone is wrong about other countries."
The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.
幾個(gè)世紀(jì)以來，印第安人發(fā)展了手語來傳達(dá)人們感興趣的現(xiàn)象。來自不同部落（FORTRAN，LISP，ALGOL，SNOBOL等）的程序員可以使用不需要他們在小馬上扛黑板的程序員。
窮人的真正悲劇是他們除了自我否定外什么都負(fù)擔(dān)不起。