# 4.121 explained — Tractatus Logico-Philosophicus

> Chapter companion for Tractatus Logico-Philosophicus by Ludwig Wittgenstein.

## What happens

Wittgenstein argues that propositions cannot represent logical form; rather, logical form mirrors itself in propositions. Language cannot represent what it expresses—it shows the logical form of reality.

## Themes in this chapter

### Picture Theory of Language

Propositions are pictures of reality; they show logical form without representing it.

### Limits of Language and Thought

Language cannot express its own logical form; what is shown cannot be said.

## Character check-ins

### Mr. Wittgenstein

Author of the proposition; presents the distinction between showing and saying.

## Key lines

> Propositions cannot represent the logical form: this mirrors itself in the propositions.

Statements cannot depict the underlying structure of logic; that structure is reflected in them.

_Logical form is shown, not represented._

> That which mirrors itself in language, language cannot represent.

What is reflected in language cannot be put into words by language.

_The showing/saying distinction._

> The propositions show the logical form of reality. They exhibit it.

Propositions display the logical structure of reality; they do not describe it.

_Emphasis on showing versus saying._

## Links

- HTML: https://www.betterreads.online/discover/tractatus_logico_philosophicus_se/chapters/4-121
- Book: https://www.betterreads.online/discover/tractatus_logico_philosophicus_se
- All chapters: https://www.betterreads.online/discover/tractatus_logico_philosophicus_se/chapters