Learning is the progress of an enterprise, without learning there is no growth.
学习是企业的进步，没有学习就没有成长。
拯救犀牛的唯一方法是拯救它所生活的环境，因为它与数百万其他动植物物种之间存在相互依赖关系。
爱就像风，你看不见它，但你能感受到它。
We are communal histories, communal books. We are not owned or monogamous in our taste or experience.
"Love is the extremely difficult realization that something other than oneself is real."
知识是解锁心灵之门的钥匙。
Never stop learning; the world is always changing.
The very shaping of history now outpaces the ability of men to orient themselves in accordance with cherished values. And which values? Even when they do not panic, men often sense that older ways of feeling and thinking have collapsed and that newer beginnings are ambiguous to the point of moral stasis.
The essence of mathematics lies in its freedom.