Bob Corbett
March 1985

Existentialism. A difficult term to define and an odd movement. Odd because most thinkers whom the intellectual world categorizes as existentialists are people who deny they are that. And, two of the people whom nearly everyone points to as important to the movement, Soren Kierkegaard and Fredrich Nietzsche, are both too early in time to be in the group, thus are usually called "precursorers," but studied and treated as members of the group.

Major figures like Jean-Paul Sartre, Martin Heidegger and Albert Camus all flatly deny they are in the movement (at least at times they did), yet everyone says they are central.

Secondly, the term is very difficult, if not totally impossible to define. What is existentialism? I've been asked that a thousand times, have read most intro type books on the field, have spent much of my teaching life "doing" Existentialism, yet cannot give a coherent and relatively short definition. It's sort of a spirit or aura of how one responds to human existence, much easier to characterize (rather than define) in negative terms -- what Existentialism is NOT that philosophy generally is -- than in positive terms of a definition.

However, I can define certain characterists that most Existentialists (and precursors to Existentialism) seem to share:


Another way of doing it is much simpler. There are about a dozen major thinkers who are characterized as "Existentilist" whom most scholars agree are existentialist. Thus, Existentialism is what these thinkers hold and write. I think that in the end, this is probably the best way to understand it.

In response to a question about the above:

I want to address, at least for a first round, the question of decision making for the Existentialists. First of all there is a split among them on their concern for decisions and actions.

One of the most important thinkers in this movement, Martin Heidegger, is very little concerned with deciding and acting, but is concerned with knowing. It not what you DO that matters to Heidegger, but how you KNOW it and that you KNOW it. Jean-Paul Sartre on the other hand is profoundly concerned with acting.

However, in general the Existentialists recognize that human knowledge is limited and fallible. One can be deeply committed to truth and investigation and simply fail to find adequate truth, or get it wrong. Further, unlike science, which can keep searching for generations for an answer and afford to just say: We don't know yet, in the everyday world, we often simply must do or not do. The moment of decision comes. For the Existentialist one faces these moments of decision with a sense of fallibility and seriousness of purpose, and then RISKS. Sartre is extremely harsh on this point. At one place he says: When I choose I choose for the whole world. Now what can this mean. I think what Sartre is getting at is that first of all when I choose and act, I change the world in some iota. This note gets written or it doesn't. That has ramifications. It commits me to say what I'm saying. It may change someone who may be affected by my remarks. Others can be too if they hear or read them. And so on. The ripples of actions are like ripples on the sea, they go on and on and on.

By my acts I also begin to define and create the self I am, which is, to some extent a public self. Thus an act is like opening Pandora's box, it lets out what's inside the act and there is no getting it back.

That's not a MORAL point to Sartre, it is an ontological fact, that is, a fact about the world. Not a should or an ought, but a description of a reality about the world and human choice.


  1. I am a person serious about my acts.
  2. If they are as uncertain as Sartre describes
  3. They are as potentially momentuous as he describes


It's not surprising that acting, for the Existentialist, is a terrifying responsibility and living and acting is a burden that causes great anxiety for the Existentialists. There is not absolute certainty (for some of the reasons given above and for yet more we can talk about later), thus human acts are the full responsibility of the individual.

Further, in another place in Sartre's major work, BEING AND NOTHINGNESS, he talks about creating oneself in action. What he means by this is that I, the human, am free. I can make up my own mind about my acts. What I will BE in some final sense is what I make of myself. Thus my acts are not trivial, but definitive of my very self-hood. Again, acting in such a world of freedom, uncertainty and ontological responsibility (as opposed to moral responsibility), is so weighty that the Existentialists nearly recoil from living and acting under the terror of the weight of it all.

Put in the shortest form: Living without certainty and with personal responsibility is a nearly unbearable burden.

Bob Corbett

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Bob Corbett corbetre@webster.edu