# to thine own self be true

> English word · Proverb

## Definitions
1. Be yourself; be true to yourself; do not engage in self-deception.

## Etymology
From a monologue delivered by the character Polonius in Act I Scene III of Hamlet by William Shakespeare.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/to-thine-own-self-be-true