Immediately prescribe some character and some form to yourself, which you shall observe both when you are alone and when you meet with men.
Our note: A rule of conduct that should hold the same whether or not anyone is watching.
Verified in the full text of The Encheiridion on Project Gutenberg · Project Gutenberg ebook #10661 · Collected in A Selection from the Discourses of Epictetus with the Encheiridion