Combinatorics is like the art of counting without actually counting.
The best leaders don't create followers; they create more leaders.
制度主义者……往往自以为非常聪明;他常常如此迷恋于自己设想的政府理想计划的所谓完美,以至于不能容忍对其有丝毫的偏离。
Sustainability isn't a trend; it's the future of energy.