The only meaningful way to study learning is through objective measurement.
研究学习的唯一有意义的方法是通过客观测量。
Leadership is not about being in charge. It's about taking care of those in your charge.
The world is a mirror, reflecting our deepest fears and desires.
You have to have confidence in your ability, and then be tough enough to follow through.
数学中的每个问题都有解决方案；你只需要找到正确的路径。