四元数的诞生，如同几何、代数、形而上学和诗歌这四位父母的奇特后代。

为了避免批评，什么也不做，什么也不说，什么也不是。

There is no greater tyranny than that which is perpetrated under the shield of the law and in the name of justice.

Collaboration between industry, government and society is essential for progress.

我不怕死，我怕没有尝试过。