Safety must remain our top priority in every operation, every day.
Every decision we make should reflect our commitment to a healthier planet.
我们应该忘记小的效率，大约97%的时间：过早的优化是万恶之源。
The joy of mathematics comes from the act of creation, not just the result.
Optimism is a strategy for making a better future. Because unless you believe that the future can be better, you are unlikely to step up and take responsibility for making it so.