The joy of mathematics is in the journey, not just the destination.

No arts； no letters； no society； and which is worst of all， continual fear and danger of violent death； and the life of man， solitary， poor， nasty， brutish， and short.

"You have to let go of who you were to become who you will be."

过去不在我们身后，而在我们之内。

The circular economy isn't a trend—it's the foundation of how we must operate.

在背后夸奖别人。这会传回到你自己那里。