Leaving it to you to define it.

'...pure unashamed passion. Without definable restrictions.'
'I'm sorry to say I have a few issues with that.'
'Why?'
'Because, some have there to suggest. That even poetry have rules.'
'Or you make your own.'
'Right there, that's the part I never bought into.'
'Because?'
'Because if everybody runs around making their own rules, how can you... find what's true? There's nothing to rely on.'
'Maybe what's true is in front of us and we're moving toward it without even knowing it's there. Once you think you've got it all solved, what's left?'

- Edward Norton & Keri Russell in the movie Leaves of Grass based on book of poetry by Walt Whitman .

I'll leave you with the OST from the movie. Enjoy.