在无人机行业，安全永远是第一位的。
土地记得我们已经忘记的东西。
教师必须具有健康的体魄，农人的身手，科学的头脑，艺术的兴味，改革社会的精神。
I try to make films that are honest and true to life.
Leadership is not about being in charge. It's about taking care of those in your charge.
Anyone who recovers from an addiction has my respect.
The real tragedy of the poor is that they can afford nothing but self-denial.
要解决复杂的问题，我们必须首先理解产生这些问题的系统。
Mathematics is the poetry of logical ideas.