出自先秦《荀子·儒效》。对于所知道的东西就说知道，不知道的就说不知道；这样，对内是不欺骗自己的良心，对外是不欺骗他人。说明为人应当诚实的道理。

The best and most beautiful things in the world cannot be seen or even touched - they must be felt with the heart.

Curiosity is the engine that drives scientific discovery.

The Internet is a shared resource that requires collective responsibility.

Success is not just about achieving your goals, but about the journey and the growth that comes with it.