You cannot teach a man anything, you can only help him to find it for himself.
你不可能教一个人任何知识, 因为你只能帮助他自己去找他想学的。
You can't cross the sea merely by standing and staring at the water.
The tears of the world are a constant quantity. For each one who begins to weep, somewhere else another stops. The same is true of the laugh.
Innovation is not just about creating something new; it's about improving what already exists to make life better for our customers.