真正的理解来自于把握问题的内在结构关系

始终不渝地忠实于自己和别人，就能具备最伟大才华的最高贵品质。

The greatest weapon against stress is our ability to choose one thought over another.

书籍是灵魂的镜子。

The most important property of a program is whether it accomplishes the intention of its user.

心灵是一个协调感觉的系统。