Basically you come up with the fictional idea and you start writing that story, but then in order to write it and to make it seem real, you sometimes put your own memories in. Even if it's a character that's very different from you.
“Money is in some respects life's fire: it is a very excellent servant, but a terrible master.”
“Scholars and historians have dubbed the last 100 years the American Century, and I think there can be little doubt that the Council on Foreign Relations helped to make it so.”