A blank canvas is Itself an Image.A blank canvas..?
A transparent sheet of glass with no smudges would be a better analogy. Better still, no glass at all!
Um, I would say pacifism.
How you would get purity from lack of aggression is beyond me.
Would you say a harmless, non-manipulative person is more on the 'pure' side? For eg, that little girl giggling and playing with her doll? ...and her parents say, she is a sweet thing who is nice to everyone and hasn't gotten into any trouble so far...
Satish