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 anointed don't like to talk about painful trade-offs. They like to talk about happy "solutions” that get rid of the whole problem- at least in their imagination.

"The important thing in science is not so much to obtain new facts as to discover new ways of thinking about them."

"Literature is a way to confront the unspeakable, to give voice to the voiceless."

學習數學的最好方法就是做數學。