If everything was perfect, you would never learn and you would never grow.

心神应该保持平静稳定，骨力应该保持活动锻炼，胸怀应该保持宽广豁达，筋骨应该保持坚强硬朗，脊梁应该保持端正平直，肠胃应该保持素淡洁净，舌端应该保持谨慎寡言，脚跟应该保持坚定不移，耳目应该保持聪明朗洁，精神应该保持正直无邪。

The city is a living organism, constantly evolving and adapting to the needs of its inhabitants.

举一个例子尚且不明白，就不要追求见多识广。