马克思的功绩在于他忽然在社会思想史上产生了一个质的变化。他解释历史，理解其动力，预测未来，但除了预测之外，他还表达了一个革命性的概念：世界不仅必须被解释，还必须被改变。
"The world is full of magic things, patiently waiting for our senses to grow sharper."
He who wants to do good knocks at the gate;he who loves finds the gate open.
Everyone is shy. Other people are waiting for you to introduce yourself to them， they are waiting for you to send them an email， they are waiting for you to ask them on a date. Go ahead.
The value chain is the set of activities through which a product or service is created and delivered to customers.
You can't manage what you don't measure.
