Existentialism Is A Humanism by Jean-Paul Sartre

“Primary absurdity manifests itself as a schism—the schism between man’s aspirations for unity and the insurmountable dualism of mind and nature, between man’s drive to attain the eternal and the finite nature of his existence, between the ‘concern’ that constitutes his very essence and the vanity of his efforts. Death, the irreducible pluralism of truths and of beings, the unintelligibility of reality, chance—these are the core components of the absurd.”

-Sartre, 1945