If a man will begin with certainties, he shall end in doubts; but if he will be content to begin with doubts, he shall end in certainties.
The significance of a mental state lies in what it leads to.
在石油和天然气行业,唯一不变的是变化——适应者繁荣,抗拒者消亡。
The cement industry must evolve or become obsolete.