Program testing can be used to show the presence of bugs, but never to show their absence!

The real challenge is to create spaces that resonate with people's emotions.

"Experience is simply the name we give our mistakes."

We recognized early on that smart people do very dumb things, and we wanted to know why and who, so that we could avoid them.

The light is what guides you home, the warmth is what keeps you there.

There are two kinds of violence of peace， that is the law and etiquette.