The wise reflect on their thoughts; the foolish indulge in their indulgences.

The goal of cognitive science is to explain how the mind works in terms of information processing.

先读经书，再读史籍，以经论史，评论古人史事，就不会与圣贤相悖；研读史籍，再温经书，以史证经，读书目的升华，决不仅为章句之学。

缺席是最大的恶。