The greatest discovery of my generation is that human beings can alter their lives by altering their attitudes of mind.
Plan your work and work your plan.
In coal, efficiency today defines existence tomorrow.
Every tree we plant today is a legacy for generations to come.
译文：爽口的美食吃多了容易生病，高兴的事过头容易生出祸殃。赏析：任何看似令人爽口的食物吃多了，都会伤害身体，更何况那些垃圾食品呢。人在高兴时，容易得意忘形，说话做事都有失妥当。