Progress is the activity of today and the assurance of tomorrow. (Emerson, American thinker)
进步是今天的活动、明天的保证。（美国思想家爱默生）
Prudence requires that we shall pitch our scale of living a degree below our means, rather than up to them.
节约的原则要求我们制定生活标准应该比我们的经济承受能力略低，而不应定得和它一般高。
Science and technology constitute the primary productive force.
科技是第一生产力。
