Who said "Consciousness is a negation; it is the being that is not."?

This quote is attributed to Sartre, Jean-Paul.

Consciousness is a negation; it is the being that is not. - Sartre, Jean-Paul

"Consciousness is a negation; it is the being that is not."

Sartre, Jean-Paul Philosophy

Philosopher-Writer French 1905–1980

"Existence precedes essence"

"We are our choices"

"Man is condemned to be free"

"Freedom is what you do with what's been done to you"

"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."