逻辑学研究不仅仅是关于形式系统，更是关于理性思维和话语的规范。

The surest way to corrupt a youth is to instruct him to hold in higher esteem those who think alike than those who think differently.

"When you do something best in life, you don’t really want to give that up – and for me it’s tennis."

读书人要为子孙营造福祉而不是祈求福祉。严谨家规，崇尚俭朴，教导耕田读书，累积陰德，这就是营造福祉。广积土地房屋，拉拢关系争取利益，买卖功名，这就是求福祉。营造福祉的，平淡而长久；祈求福祉的，浓郁却短暂。

以诚待物，真诚是通行天下的原则。

教育儿童，就不需要惩罚成年人。