色多多在线观看播放-色多多在线观看高清免费-色多多在线观看视频-色多多在线看-欧美aaaaa性bbbbb小妇-欧美aaaav免费大片

The fountain of content must spring up in the mind, and they who have so little knowledge of human nature as to seek happiness by changing anything but their own dispositions will waste their lives in fruitless efforts.

學得越多，知道得越多。知道得越多，忘得越多。忘得越多，知道得越少。那何必學習呢？

在最低階層中保存知識的手段對公眾來說比國家中所有富人的所有財產都更重要。

Who is it that I aspire to be? That is the question that we should be asking ourselves all the time.

最大的危險是不冒任何風險。

理性是冰冷的太陽，它給予光明卻不給予溫暖。