www.midomi.com：一个很有趣的音乐搜索引擎，对着话筒哼上一段歌，它就能给出歌名。试了下，歌曲都给的蛮准，但音乐常常给不出结果。根据http://en.wikipedia.org/wiki/Query_by_humming，这样的搜索引擎还不少

爱因斯坦语录：

"Only two things are infinite, the universe and human stupidity, and I'm not sure about the former."

"Every day, man is making bigger and better fool-proof things, and every day, nature is making bigger and better fools. So far, I think nature is winning."

"The difference between genius and stupidity is that genius has its limits."

"Put your hand on a hot stove for a minute, and it seems like an hour. Sit with a pretty girl for an hour, and it seems like a minute. THAT'S relativity."

"Common sense is the collection of prejudices acquired by age eighteen."

"The hardest thing in the world to understand is the income tax."

"The secret to creativity is knowing how to hide your sources."

"You teach me baseball and I'll teach you relativity...no we must not. You will learn about relativity faster than I learn baseball."