I always thought it was important to have a vision and to persist.
In the oil industry, efficiency and sustainability are two sides of the same coin.
在为增加粮食生产的机构和为控制人口的机构联合起来共同努力之前,抗击饥饿的斗争不可能取得永久性进展。
True freedom is inner freedom.
Books are the quietest and most constant of friends; they are the most accessible and wisest of counselors, and the most patient of teachers.