心灵是进化和学习的产物。
The mind is a product of evolution and learning.
Old soldiers never die. They just fade away.
When you are young spend at least 6 months to one year living as poor as you can， owning as little as you possibly can， eating beans and rice in a tiny room or tent， to experience what your “worst” lifestyle might be. That way any time you have to risk something in the future you won’t be afraid of the worst case scenario.
Every word is a step towards understanding.
可持续性不是一种选择，而是一种责任。