To solve a problem, one must first understand its nature and then find the right tools to tackle it.

【解释】有腐草和粪料的土地，植物繁茂生长；清澈见地的河流，常常不会有鱼虾。君子应有包容世间善恶、雅俗、是非的胸襟，不可追求绝对的完美，而脱离实际。

The challenge of our time is to harness energy without harming the planet.

粮食安全是国家安全的基石，我们必须牢牢把握在自己手中。