What is the original Latin?

utrumque enim vitium est, et omnibus credere et nulli. Translated from the original Latin by Spartan Surfers.

utrumque enim vitium est, et omnibus credere et nulli

Trusting everyone and trusting no one are both mistakes.

Seneca, Letters to Lucilius 3.4

What it means

Blind trust gets you used, and total suspicion leaves you alone. Seneca wants judgment instead of a rule. Test people over time, then trust the ones who earn it fully.

The source

"Trusting everyone and trusting no one are both mistakes." Seneca said it in Letters to Lucilius 3.4. Translated from the original Latin by Spartan Surfers.

"utrumque enim vitium est, et omnibus credere et nulli"

Original Latin, Letters to Lucilius 3.4. Text read at thelatinlibrary.com.

Who said it

Seneca (c. 4 BC–65 AD). Stoic philosopher, playwright and adviser to the emperor Nero. His letters to his friend Lucilius are the most readable handbook of Stoicism ever written.

Questions

What does "Trusting everyone and trusting no one are both mistakes." mean?: Blind trust gets you used, and total suspicion leaves you alone. Seneca wants judgment instead of a rule. Test people over time, then trust the ones who earn it fully.
Who said "Trusting everyone and trusting no one are both mistakes."?: Seneca (c. 4 BC–65 AD). Source: Letters to Lucilius 3.4.
What is the original Latin?: utrumque enim vitium est, et omnibus credere et nulli. Translated from the original Latin by Spartan Surfers.
Is "Trusting everyone and trusting no one are both mistakes." on a shirt?: Yes. We print it to order on our tees in 7 illustrated looks, from $44, with free US shipping.

Cite this line

"Trusting everyone and trusting no one are both mistakes." (Seneca, Letters to Lucilius 3.4, translated by Spartan Surfers). https://spartansurfers.com/quotes/trusting-everyone-and-trusting-no-one-are-both