勤勉：不要浪费时间，只做有用的事情，戒除一切不必要的行为。
The future of drones belongs to those who dare to push boundaries.
Make the weaker argument the stronger.
"Kindness is a language that everyone understands."
The poor are not lazy; they are just caught in a system that makes it very hard for them to escape poverty.
When you innovate, you've got to be prepared for everyone telling you you're nuts.
The future of animal health lies in prevention, not just treatment.