# 6.1223 explained — Tractatus Logico-Philosophicus

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

## What happens

Wittgenstein explains why logical truths seem to require postulation: they can be postulated only insofar as we can postulate an adequate notation.

## Themes in this chapter

### Logic and Tautology

Logical truths are tautologies that require only an adequate notation, not substantive postulation.

## Character check-ins

### Mr. Wittgenstein

Author of the Tractatus; explains the nature of logical truths and notation.

## Key lines

> It now becomes clear why we often feel as though “logical truths” must be “ postulated ” by us. We can in fact postulate them in so far as we can postulate an adequate notation.

We now see why logical truths seem to need our stipulation: they can be stipulated only to the extent that we can stipulate a proper symbolic system.

_Wittgenstein clarifies that the apparent need to postulate logical truths reduces to the need for a suitable notation._

## Links

- HTML: https://www.betterreads.online/discover/tractatus_logico_philosophicus_se/chapters/6-1223
- Book: https://www.betterreads.online/discover/tractatus_logico_philosophicus_se
- All chapters: https://www.betterreads.online/discover/tractatus_logico_philosophicus_se/chapters