Madonna.

I hereby declare her as the definition of ambiguity.
La Gioconda made me stare at Mona Lisa for half an hour.
I couldnt figure out what are her thoughts,
or what made her lips curl.
Her non existent eye brows,
are hardly noticed thanks to her protruding eye bones and flat forehead.
well, that was the only fact i concluded after staring at every inch of the picture.
Leonardo Da Vinci's four year efforts,
are highly valued, thanks to his genius touch on the tone of the picture.
It tells of a sheltered, warm lady, smiling.
But the reasons are absolutely hidden.
Perhaps, it  was a secret message to,
maybe someone he loved.
maybe, Lisa Gherardini herself.
A classic inside joke.
What i know is that,
Leonardo did a right choice by continuing this piece of art.
Pure, genius.