Literature Minus One

I’d like to ask you all out there for your participation here: pick a work of literature or philosophy (or poetry, if you can make it work) and a sentence from that work that, if the sentence had been excluded from the work, would have made the greatest difference in the work’s interpretation/reception/history in the following years. I’ll start with what set me off on this line of thinking in the first place:

My propositions serve as elucidations in the following way: anyone who understands me eventually recognizes them as nonsensical, when he has used them–as steps–to climb up beyond them.

Wittgenstein, TLP 6.54

Who’s next?