Small actions, when multiplied by millions of users, can change the world.

科学中最强大的工具不是技术，而是想象力。

The only freedom which deserves the name is that of pursuing our own good in our way， so long as we do not attempt to deprive others of theirs or impede their efforts to obtain it.

聪明的人喜欢水，因为他性情活跃像水一样流动不息，仁慈的人喜欢山，因为他心地淳厚象山一样厚重。聪明的人好动，仁慈的人好静，聪明的人乐观，仁慈的人长寿。