The Raven, and The Philosophy of Composition

Nothing is more clear than that every plot, worth the name, must be elaborated to its dénouement before anything be attempted with the pen.

没有什么比这更清楚的了：每一个真正值得称为情节的东西，都必须在落笔之前先构思到它的结局。

I prefer commencing with the consideration of an effect.

我更喜欢从效果（印象）的考量开始。