Dear Sofia,
"we don't have to fear this silence. - we may love it." said John Cage. And Erik Satie: "Boredom is profound and full of secrets". You sometimes complained and accused me of being unable to talk for myself, using quotes of famous people instead. But what should I say about white and nothingness?
Nothing can come of nothing is a usual conclusion, but is it justyfied? I don't think that it's an apriorical sentence, and it is certainly not a sentence based on experience: who ever experienced the lack of everything, including the lack of any kind of observer? We never see a perfect vakuum, and due to Heisenberg's fault, such a thing is unable to exist, it seems.
How should we imagine a perfect void? It should be empty not only of any kind of matter, but also empty of space and time, and even more, empty of any physical or maybe even logical law. But how can we, in such a situation, claim that nothing can be caused in this situation? It's worser than a blind born human talking about colors.
Why does something exist, not nothing? On the other hand, could it be possible that nothing exist? Another question: why do I have the feeling to exist? I mean, I could also exist without the feeling of existence; I guess stones or pocket calculators don't share this feeling.

Yours,
John