The past is the past, and that’s where it belongs.
农业的进步不仅要以产量衡量,还要以长期的环境影响来衡量。
Efficient market theory is correct in that there are no gross inefficiencies, but we look at anomalies that may be small in size and brief in time.
Every mathematical problem is a puzzle waiting to be solved, and every solution is a step closer to understanding the fabric of reality.