For me they normally happen, these career crises, often, actually, on a Sunday evening, just as the sun is starting to set, and the gap between my hopes for myself and the reality of my life starts to diverge so painfully that I normally end up weeping into a pillow.

科学是一种探索未知的冒险，每一次发现都是对自然的一次敬畏。

"What we choose to remember says as much about us as what we choose to forget."

Quality is remembered long after the price is forgotten.

相信自己，即使没有其他人相信你。

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