质量不是权利；它是一种特权。
Quality is not a right; it is a privilege.
The development of the drone industry is ultimately to serve humans, not to replace them.
The past is always tense, the future perfect.
你无法取悦所有人，所以不要尝试。
在任何情况下生存的最佳方法就是为之做好准备。
艺术家必须自由，甚至要从自身中解放。
The same principles which at first view lead to skepticism， pursued to a certain point， bring men back to common sense.