You cannot drive away an internal enemy.
 Victor Hugo, Ninety-Three (1874). copy citation

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Author Victor Hugo
Source Ninety-Three
Topic enemies
Date 1874
Language English
Reference
Note
Weblink https://en.wikisource.org/wiki/Ninety-three

Context

“Robespierre replied gently,— "I am willing," and he added, "The question is to know where the enemy is."
"It is outside, and I have driven it there," said Danton.
"It is within, and I am watching it," said Robespierre.
"And I will drive it out again," replied Danton.
You cannot drive away an internal enemy. "What can be done then?"
"It must be exterminated."
"I give my consent," said Danton in his turn, and he continued: "I tell you it is outside, Robespierre."
"Danton, I tell you it is within."
"Robespierre, it is on the frontier."
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