注释：恭敬、节俭、谦逊、守礼，这样才能自我坚守。深谋远虑，这样才能避免困厄。亲近仁德之士、结交正直之人，这样才能在危难时得到帮助。

The greatest happiness is to know the source of unhappiness.

"The only true wisdom is in knowing you know nothing."

主从内而外工作，世界从外而内工作。

"The beauty of science is that it is constantly evolving and there is always something new to discover."