First, never label something as deep if you wrote it. It'll make the criticism too critical.
Secondly, your poem just uses established clichés:
The mind is but an illusion
we know nothing - This is brought up in nearly every religious/post-modern criticism.
yet we know everything - This is brought up again and again in any criticism of modernism.
those who know everything understand nothing - Repetition of the above basically.
we are living in a dream - Just thrown in there
and the world exists within each of us - K....
So, really read the peace again, your second and third line can be omitted for the fourth line, giving the poem a bit more restriction.
The last two lines make some sense when read together, but really, they only briefly touch the initial concept.