third-person singular present of sein

-ist

trust, but verify (trust is not enough; verification is required)

speech is silver, silence is golden

less is more

to err is human

Once doesn’t count; one swallow does not a summer make / One slip is allowed; everyone deserves a second chance / One time won’t hurt; just try it

no use crying over spilt milk. / what's done is done

orders are orders (Used wrily when someone attempts to justify questionable actions by referring to rules, laws or orders from higher up.)

time is money