This is the actual quote, unless you can provide a better source.
“Soros: I wrote a series of articles in the course of the year, I wrote a book, I published a book and I’m just about to publish a sequel to last year’s book, bringing it up to date, I am just working on it now.
Interviewer: So do you have a sense that things are coming together for you now?
Soros: It is in a way a culminating point of my life’s work, so to speak.”