The Starting paragraphs of 'Sophie's World'

I managed to find 'Sophie's World' (the book that was recommended by Mr. Teo. The book was by Joestin Gaardner). As Mr. Teo has said, it was indeed a challenging read. More so because the book is a novel that was wrapped around philosophy. It makes it harder for us to understand. There are parts in the book (the parts which I read, of course) which require really in-depth thinking to uncover the profound and intriguing meaning to it. For example, what does this paragraph mean to you? :
"As Sophie started to think about being alive, she began to realize that she would not be alive forever. I am in the world now, she thought, but one day I shall be gone.
Was there a life after death? This was another question the cat was blissfully unaware of.
It was not long since Sophie's grandmother had died. For more than six months Sophie had missed her every single day. How unfair that life had to end!"
And, :
"As soon as she concentrated on being alive now, the thought of dying also came into her mind. The same thing happened the other way around: only by conjuring up an intense feeling of one day being dead could she appreciate how terribly good it was to be alive. It was like two sides of a coin that she kept turning over and over. And the bigger and clearer one side of the coin became, the bigger and clearer the other side became too."
These extracts talks about life and death (not literally, or course!). It is a topic that most of us try to avoid discussing about. In these few paragraphs it is talked about clearly. Sometimes people can only appreciate being alive when they are about to die. Quite interesting, isn't it? I will post more about Sophie's World as I read, so keep looking for these posts!

P.S. Remember to comment on it too!
P.P.S. I have added a forum so after commenting on the post you guys can discuss in the forum! =D