最复杂的电路板仍然需要最简单的人类价值观才能在社会中发挥作用。
The best thing to hold onto in life is each other.
Man is so much the voice of his interest that it is not enough to make him see the right, but you must make him feel it.
研究学习的唯一有意义的方法是通过客观测量。