People
Life has no meaning the moment you lose the illusion of being eternal.
— Jean-Paul Sartre

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The statement links a sense of meaning to the belief that life will somehow continue without end, while calling that belief an illusion. Its stark claim is that recognizing mortality destroys that meaning. The suddenness of 'the moment' leaves no room for a gradual adjustment.
Context reviewed