The challenge of our time is to build an economy that works for everyone, not just the privileged few.

To know this world is to love it, and to love it is to grieve for it.

Mental processes are the living organism's survival toolkit.

体现了道家阴阳平衡的思想，强调事物之间的相互制约与和谐。

"We must always strive to do the right thing, even when it is difficult."