唯一真正的发现之旅不在于寻找新的风景,而在于拥有新的眼光。
The only real voyage of discovery consists not in seeking new landscapes, but in having new eyes.
数学是一门活生生的学科,随着新思想的出现而不断发展。
我们如海鸥之与波涛相遇似地,遇见了,走近了。海鸥飞去,波涛滚滚地流开,我们也分别了。
The essence of a free government consists in an effectual control of rivalries.