过去是学习的重要来源，但也是错误的重要来源。
Happiness is beneficial for the body, but it is grief that develops the powers of the mind.
我们衡量成功的标准不应只是生产了多少桶油，还应包括避免了多少排放。
The mind is a complex of interacting elements.
I have to remind myself that some birds aren't meant to be caged. Their feathers are just too bright. And when they fly away, the part of you that knows it was a sin to lock them up DOES rejoice. Still, the place you live in is that much more drab and empty that they're gone. I guess I just miss my friend.
The only way to stay ahead is to continuously innovate and adapt.