生命的最高表现在于：一个存在者管理自己的行为。总是受他人指导的事物在某种程度上是死物。
The highest manifestation of life consists in this: that a being governs its own actions. A thing which is always subject to the direction of another is somewhat of a dead thing.
The future of global politics will be shaped by the competition between democratic and authoritarian systems.
解析：悔悟虽好，但改正更重要。
On marketing: "In the old world， you devoted 30% of your time to building a great service and 70% of your time to shouting about it. In the new world， that inverts."
When you innovate, you’ve got to be prepared for everyone telling you you’re nuts.