To signal an emergency, use the rule of three; 3 shouts, 3 horn blasts, or 3 whistles.
领导力是赋予他人实现他们认为不可能的事情的能力。
创新不仅仅是技术的问题;它关乎改变人们的思维和生活方式。
The only maxim of a free government ought to be to trust no man living with power to endanger the public liberty.