Art is in what you leave out.

Quantum cryptography doesn't rely on the difficulty of mathematical problems, but on the fundamental laws of physics.

心灵总是在忙于让生活运转。

We can't just farm fish; we must farm ecosystems.

A wise man said， “Before you speak， let your words pass through three gates. At the first gate， ask yourself， “Is it true？” At the second gate ask， “Is it necessary？” At the third gate ask， “Is it kind？”