What this does, more than anything, is make you appreciate the craft that Caro puts into his work. Most of these essays, interviews, and passages were printed elsewhere and have been collected into this short volume. Some are original to the book, though. He is also driven by a force which he isn't even able to identify to flesh out the lives, locales, and intricacies surrounding his subjects.
Caro has written five biographies, not including this slim volume. Four are about Lyndon Johnson (he's working on the fifth) and the first about Robert Moses. With each he extensively researches, interviews, travels, and sometimes lives around the people that influenced his subjects. He is dogged, untiring, and he has a very understanding wife.
In this, you learn about his process, which is defined most simply by some advice he received as a young reporter, "turn every page." As much as Caro and his research assistant (that same understanding wife) are able to, he sticks to this advice. He also writes in longhand, then typewriter, he outlines extensively (LBJ's book five has a 27 page outline), has notebooks for each book chapter, and walks to work every morning dressed in a suit and tie to prove to himself that, though he doesn't have deadlines, he is going to work. When he interviews, asks the same question over and over, over several interviews, until new details emerge. "What did you see?" "What did you hear?" He also remembers to be silent, to let the silence grow, so his interviewee fills that silence with information. When he struggles to stay quiet, he writes in his reporter's notebook "SU" for shut up.
I'm not sure much of this is helpful to the average writer, but it does illuminate the man more than one would expect. We find that as driven as his two subjects are, he is just as driven, by what? To illuminate political power, to teach us how it works, to expose the pieces so that we become better informed. Also to appreciate that, however destructive political genius can be (displacing half a million low income people in New York City, Vietnam), it can also build (civil rights, highways, parks, healthcare, etc.)
As someone who has not read Caro's biographies, I enjoyed this book. It makes me want to read what he's put his life's efforts into. It is a bit repetitive in some places, likely due to it being piecemeal interviews, articles, essays, etc., but it is worth a look.
Select quotes:
"The more we understand the realities of the political process, the better informed our votes will be. And then, presumably, in some very diffuse, very inchoate way, the better our country will be."
"Really, my books are an examination of what power does to people." "...What power always does is reveal...."
"In my defense: while I am aware that there is no Truth, no objective truth, no single truth, no truth simple or unsimple, either....there are Facts, objective facts, discernible and verifiable. And the more facts you accumulate, the close you come to whatever truth there is."