Jean-Paul Sartre, a French philosopher, wrote the piece, “Existentialism is a Humanism” in which he defends the title by debunking critical statements made against existential humanism. In the process, he uncovers some of the key aspects of it from an atheistic position.

Over the years and particularly during the middle of the 20th century, existentialism was referred to as a doctrine that emphasized the “quietism of despair” and the solitude of man that neglected the brighter side of life (Sartre, 1a). People also identified it with traits such as gloominess, negativity, ugliness, one of pure subjectivity, without hope, naturalistic, a form of sad wisdom, and one that meddled with matters such as restrain (did not have firm rules) and romanticism (Sartre, 1b). Sartre says that these harsh comments against existentialism are inaccurate and that in fact, people are much more agitated not by its pessimism but by its optimism (Sartre, 1b). Not taking the word ‘existentialism’ for what it stands for, people do not realize that existentialism is actually the “least scandalous and most austere” (Sartre, 2a).