Food security is the cornerstone of national security, we must firmly grasp it in our own hands.

A first sign of the beginning of understanding is the wish to die.

容易愤怒就会伤害别人；私欲太多了就会害了自己；贪图安逸就会有害于自己的品德；忧虑太多，就会削弱自己的意志。