过去已成过去，但未来是一张白纸。

"Quantum cryptography is not about keeping secrets, it's about knowing when someone is trying to steal them."

The highest manifestation of life consists in this: that a being governs its own actions. A thing which is always subject to the direction of another is somewhat of a dead thing.

One of the greatest ways to avoid trouble is to keep it simple...the system often goes out of control.

最好的公司不仅仅是销售产品；它们销售体验和信任。