A teacher must have a healthy body, the skills of a farmer, the mind of a scientist, the interest in art, and the spirit of social reform.
我不后悔我做过的事,我后悔的是有机会时没有做的事。
"The world is full of stories, and most of them are lies."
Understanding the fundamentals is key to mastering any complex system.
凡事都有困难应考虑周详,行动上要顾虑缺失,想一想自己的行为,都有许多差错。