György Lukács

From the ethical point of view, no one can escape responsibility with the excuse that he is only an individual, on whom the fate of the world does not depend. Not only can this not be known objectively for certain, because it is always possible that it will depend precisely on the individual, but this kind of thinking is also made impossible by the very essence of ethics, by conscience and the sense of responsibility.

There is no reasonable doubt that existentialism will soon become the predominant philosophical current among bourgeois intellectuals." (1949)