Don’t take it personally when someone turns you down. Assume they are like you: busy， occupied， distracted. Try again later. It’s amazing how often a second try works.

I'm not a brand, I'm a human being.

The realization that electronic properties can be topologically protected has revolutionized our understanding of solid-state physics.

诗人是一个睁着眼睛做梦的梦想家，他看到的世界不是它现在的样子，而是它可能成为的样子。