The teacher is not in school to impose certain ideas or to form certain habits in the child, but is there as a member of the community to select the influences which shall affect the child and to assist him in properly responding to those influences.

行动是正确的，因为它们倾向于促进幸福；错误是因为它们倾向于产生与幸福相反的结果。

递归是计算的根源，因为它需要时间来描述。

A scientist’s greatest tool is an open mind.

I'm not perfect, but I'm trying every day.

我喜欢争论，我喜欢辩论。我不期望任何人只是坐在那里同意我，那不是他们的工作。

The only way to improve is to play against the best.