Ok. Let's keep David's answer for the moment.
The question is not just a simple one, which one come first, father or son?
I am not here nor there.
I am not right nor wrong.
I do not exist neither non-exist.
I am not I nor non-I.
I am not in samsara nor nirvana.
To All Buddhas, I bow down for the teaching of emptiness. Thank You!