可能的原因,我不知道为什么,但我观察到了它。
Probable reason, I know not how it is, but I have observed it.
数学不是一项观赏性运动。你必须亲自去做才能理解它。
I have come to believe that a great teacher is a great artist and that there are as few as there are any other great artists. Teaching might even be the greatest of the arts since the medium is the human mind and spirit.
史记
理解复杂系统的行为需要一种新的思维方式,一种接受不确定性和不可预测性的思维方式。
人心在任何年龄都只会向同样敞开的心敞开。
学校必须是一个让孩子学会将眼前欲望服从于更大社会利益要求的地方。