>“I am alone, and this loneliness is killing me”, is a quote, quoted by someone that I happen to read on the internet 

Is the sentence after the quote correct?

What I’m trying to say is that I saw this quote on the internet. The quote is not the problem, but is the sentence I wrote after the quote correct?  
I hope that when people read this they can understand what I am trying to say, especially if written in a blog or journal. 

If the sentence is wrong, how would you put it?