Who am I?

Am I my name? No, for my name is only a label given to me at birth.
Am I my job? No, for jobs change yes I am still me.
Am I my interests? No, for what fires me is also subject to change and whimsy.
Am I cells? Am I neurons? Am I mind? Who? What?
I purely am.

It looks as if the BBC have taken a simplified Myers-Briggs type test as part of one of their shows. My results say that I'm an Idealist, which apparantly means that I:

...seek fulfilment by helping others improve themselves and often want to make the world a better place.

Little boxes, I know, and as scientific as astrology, but I like to see myself as a hippie.

What are you?

[via Spinnyhead.]