# 6.3 explained — Tractatus Logico-Philosophicus

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

## What happens

Logical research is the investigation of all regularity; outside logic, everything is accident.

## Themes in this chapter

### Logic and Tautology

The chapter defines logical research as the investigation of all regularity, contrasting it with the accidental nature of everything outside logic.

## Key lines

> Logical research means the investigation of all regularity . And outside logic all is accident.

The study of logic is the study of all that is regular and necessary; anything not governed by logic is purely accidental.

_Wittgenstein distinguishes the necessary regularity of logic from the contingency of the world outside it._

## Links

- HTML: https://www.betterreads.online/discover/tractatus_logico_philosophicus_se/chapters/6-3
- Book: https://www.betterreads.online/discover/tractatus_logico_philosophicus_se
- All chapters: https://www.betterreads.online/discover/tractatus_logico_philosophicus_se/chapters