I don't know

I have said it a million times, pleading
my ignorance on almost everything. 
I have said it a million times 
with a shrug of my shoulders to
shirk off any responsibilities. 
But the one that I have in mind now
is a different kind of "I don't know". 
This one flies on mighty wings 
of knowledge and curiosity and
is a lot harder to say than all the others.
The masters of art and science are 
as always ahead in saying this one 
and urge me to repeat after them. 
I oblige, lean in on the cosmic static
to see mystery written into everything. 
I unproddingly say "I don't know"
and collect the necessary firewood
that'll keep me going, as I practice the phrase.