Seven days black and white challenge day #12

I'm a paradox A collection of contradiction A stockpile of conflicting either/ors Either too serious Or not too serious Either too deep Or too shallow Too sensitive Or too cold-hearted Either too quite Or too much of a chatterbox

I cannot be define
By anything other than
Paradox [n] something that contradicts itself
Everything I am
Condensed in a single word
My very existence
Cancelling itself out
And the question is
What am I?
And the only non-paradoxical answer is
A paradox