Enlightenment?

Hope to hear some thoughts and ideas from others. Shed some light on this very issue.

In Buddhism, "Everything is nothing and nothing is everything", so am I right to say that we could think that, if we believe that we know everything and we are full of ourselves, we will gain nothing, but if we believe we are nothing and we try to absorb everything and thus gain enlightenment.

This then seems to be a cycle of life. And this should be what enlightenment really is? The cycle of life?

We are nothing and everything as we are part of something and too small to be something. With everything that revolves around, there is always a cycle that would involve us.

So what do you say? What is enlightenment and how can we ever know all? Is this what every monk is trying to search for, how are they part of this very cycle of life?