可持续性不是一种选择，而是我们对后代的责任。
Don't wait until everything is just right. It will never be perfect. There will always be challenges, obstacles and less than perfect conditions. So what. Get started now. With each step you take, you will grow stronger and stronger, more and more skilled, more and more self-confident and more and more successful.
The past is a ghost, the future a dream, and all we ever have is now.
森林不属于我们，我们属于森林。
Markets are efficient enough that most investors will not outperform the market over the long term.
The world is a mystery, and we are all detectives.
过去从未消逝，它甚至还未过去。
数学的乐趣在于发现的旅程，而不仅仅是目的地。