The great question which, in all ages, has disturbed mankind, and brought on them the greatest part of their mischiefs, has been, not whether there be power in the world, nor whence it came, but who should have it.

The challenge of quantum computing is not just technical but also conceptual.

音乐是通用的语言。

人不能以流水作为镜鉴，只能在静止的水面照见自己。