# 4.1221 explained — Tractatus Logico-Philosophicus

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

## What happens

Wittgenstein defines an internal property of a fact as a 'feature' of that fact, drawing an analogy to facial features to illustrate how such properties are inherent and recognizable.

## Themes in this chapter

### Logical Atomism

The discussion of internal properties of facts relates to the atomic structure of facts and their constituent features.

## Character check-ins

### Mr. Wittgenstein

Author of the proposition, introducing the concept of internal properties as features.

## Key lines

> An internal property of a fact we also call a feature of this fact. (In the sense in which we speak of facial features.)

An inherent characteristic of a fact can be described as one of its distinguishing traits, similar to how we talk about the features of a face.

_Clarifies the terminology of internal properties by comparing them to observable facial features._

## Links

- HTML: https://www.betterreads.online/discover/tractatus_logico_philosophicus_se/chapters/4-1221
- Book: https://www.betterreads.online/discover/tractatus_logico_philosophicus_se
- All chapters: https://www.betterreads.online/discover/tractatus_logico_philosophicus_se/chapters