修炼的四个阶段：将精转化为气，气转化为神，神回归虚无，最终与道合一。

充满爱的心是最真实的智慧。

The only limits you have are the limits you believe.

If we had paid no more attention to our plants than we have to our children, we would now be living in a jungle of weeds.

在我们生命的不同阶段，我们都会变成完全不同的人。