Reality
 

Every aspect of it, everything, all of it, it's all relative. There is no meaning to anything except what an individual wants to place on it, and even then, can the individual be sure it's his true meaning and not one that Society has corrupted and placed in his mind? Everything from tastes to emotions is dictated by society, and we conform accordingly.

The one law of the Universe is that there is no laws, no rules, no facts. Everything is everything, everywhere is nowhere, and our reality is highly questionable as being "real".

Welcome to existentialism friend, we have punch and cookies on the way out!

Is it really? I thought I had stumbled upon something new :p

I regret to say that I don't have much knowledge with regards to existentialism. What exactly is it's key concepts?

I apologize for the very general statement. I'm just curious to hear what the responses would be.

It will be difficult to describe the "key concepts" of existentialism as it is a very broad subject. What is usually emphasized in this worldview is the focus on existence preceeding essence and angst.

Check out the writings of Sartre and Camus for starters. I highly recommend Camus' "The Plague" and Sartre's "The Wall" for starters. Both are short fictional stories that should give you a flavour for existentialism.

The Wall is even available online at: The Wall (1939) | Jean-Paul Sartre