Start where you are, with what you have. Make something of it. Never be satisfied.
我这一代人最伟大的发现是,人类可以通过改变心态来改变他们的生活。
History is not just what happened, but what we remember and how we remember it.
能源领域的创新不是可选项;它是必须的。
The more the division of labor and the application of machinery extend, the more does competition extend among the workers, the more do their wages shrink together.