Who said "The nature of the enemy cannot be predetermined."?

This quote is attributed to Carl Schmitt.

The nature of the enemy cannot be predetermined. - Carl Schmitt

"The nature of the enemy cannot be predetermined."

Carl Schmitt Philosophy

Jurist, Political Theorist German 1888–1985

"Sovereign is he who decides on the exception."

"The exception is more interesting than the rule."

"Every general norm presupposes a normal, regular situation in which it can function."

"Political theology is the science of the exception."

"I've seen the worst humanity has to offer."

"Sometimes I wonder if the world is worth saving."

"Every choice shapes our destiny."

"Order is the foundation of a good life."