逻辑是所有数学推理的基础。
Logic is the foundation of all mathematical reasoning.
When someone makes a decision, he is really diving into a strong current that will carry him to places he had never dreamed of when he first made the decision.
眼睛是什么也看不见的，一定要用心去看。
板块构造理论的美妙之处在于，它用如此简单的理论解释了如此多的现象。
The most realistic distinction between the investor and the speculator is found in their attitude toward stock-market movements.