有时我们为某些事感到悲伤，却不愿告诉别人。我们想保守这个秘密。或者有时我们感到悲伤，却真的不知道为什么悲伤，于是我们说我们不悲伤，但实际上我们是悲伤的。

In the realm of mathematics, every problem is an opportunity to discover something new.

The true taste of success is when your product brings joy to people's tables.

The most successful businesses are those that listen to their customers and adapt quickly.

Overfishing is like maxing out a credit card - the heavy price will come due eventually.

想象力比知识更重要。知识是有限的，而想象力则环绕着世界。