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。
孤独的人有他们自己的泥沼。
预测未来的最好方法就是实现它。
不管战略多美妙,偶尔看看结果如何很重要。
The beauty of physics lies in its ability to explain the complex with simple, elegant theories.
真相很少是纯粹的,也从不简单。
The act of creation is an act of revelation.