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

Our greatest natural resource is the minds of our children.

語(yǔ)言的藝術(shù)就是生活的藝術(shù)。

The pursuit of science is more than the pursuit of understanding. It is the pursuit of wonder.

Loneliness is the human condition. Cultivate it. The way it tunnels into you allows your soul room to grow.

最糟糕的監(jiān)獄不是有墻和欄桿的監(jiān)獄，而是我們思想中的監(jiān)獄。