Sie suchten nach: if two are doing the same thing, is not ... (Italienisch - Latein)

if two are doing the same thing, is not the same
si duo faciunt idem, non est idem

we are all mistaken for the same thing and there is no one
nimirum idem omnes fallimur, neque est quisquam

you think the same thing as i
cogitas eamdem rem quam ego