每一个挑战都是成长的机会。
The best way to learn econometrics is by doing—working with real data and real problems.
我不想画那些像模特一样坐在那里的人。我想画真实的人。
每小时,她想着,有人锻造戒指,有人雕刻摇篮,有人输掉战争。
The best investment is in education.
The noblest pleasure is the joy of understanding.