Your most unhappy customers are your greatest source of learning.
你最不满意的客户是你最大的学习来源。
The world is full of signs, but we have forgotten how to read them.
People won't have time for you if you are always angry or complaining.
The future of drones belongs to those who dare to push boundaries.
最危险的幻觉是被我们误认为现实的那些。
要重生,首先你得死。