写作是记住，而阅读是忘记。
To write is to remember, but to read is to forget.
The balance between production and conservation is delicate, but achievable.
The stranger is an element of the group itself, not unlike the poor and sundry 'inner enemies'—an element whose membership within the group involves both being outside it and confronting it.
学习是系统中产生的任何变化，这些变化或多或少会永久性地改变其适应环境的能力。