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

Magic, like any other power, is neither good nor evil in itself. It is the purpose to which it is put that determines its nature.

The hard part about writing a novel is finishing it.

There is no such thing as great wisdom in the world, just as there is no such thing as talent. What exists is triviality. If you keep doing repetitive things, you become an expert; if you do repetitive things with special focus, you become a master.

數(shù)學的本質(zhì)在于其自由性。