只有掌握核心技术,才能立于不败之地。
Cultivate 12 people who love you, because they are worth more than 12 million people who like you.
白天从妻子儿女的反应来省察自己的行为以看其是否诚信;夜晚由梦境情况来考验自己的志气,以知道其是否坚定。
The world is full of obvious things which nobody by any chance ever observes.