Who said "Injustice anywhere is a threat to justice everywhere."?

This quote is attributed to Nero.

Injustice anywhere is a threat to justice everywhere. - Nero

"Injustice anywhere is a threat to justice everywhere."

Nero Justice

Emperor Ancient Rome 37–68

"If you begin to live life looking forward to happiness in the future, you will never be happy. Happiness is now."

"I wish the Roman people had only one neck."

"What is an emperor without the love of his people?"

"It is more cruel to take life than to lose it."

"Justice must always prevail."

"You think I'm just some animal?"

"Fighting for what's right never gets easier."

"Justice is worth fighting for."