The world owes all its onward impulses to men ill at ease. The happy man inevitably confines himself within ancient limits.

Food security is the cornerstone of national security.

永远不要停止问：“我们怎样才能做得更好？”

改变令人不适，但停滞是致命的。

追求知识是一段永无止境的旅程，这正是它如此令人兴奋的原因。