That’s been one of my mantras—focus and simplicity.Simple can be harder than complex，you have to work hard to get your thinking clean to make it simple.
专注和简单一直是我的秘诀之一。简单可能比复杂更难做到，你必须努力理清思路，从而使其变得简单。
We believe that we need to own and control the primary technologies behind the products we make.
The cycle of poverty begins with the abandonment of hope.
The past is never dead. It's not even past.
The most important thing in mathematics is to ask the right questions.