Happiness is beneficial for the body, but it is grief that develops the powers of the mind.

婴儿不是需要修理的物品，而是需要理解的人。

让我们这本《大教学论》的主要目标如下：寻求并找到一种教学方法，使教师教得更少，但学生学得更多。

If you want to keep something precious, you have to lock it up and throw away the key.

Thought is a biological function with survival value.

心灵是一个不断进化的过程。