"Matching methods can be a powerful tool when randomization is not possible."
爱不是有限的资源。
The best biographies are those that make the reader feel they have met the subject in person.
国家的力量对于任何社会的成功都至关重要。
The best art changes the way we see the world, not just the way we see art.
What I’m doing right now, I’m chasing perfection.
建筑是使必要之物变得美丽的艺术。
Efficiency in mining comes from continuous improvement, not just big breakthroughs.
