Reddit mentions of Wealth Secrets: How the Rich Got Rich

I know his background and I also know some of the allegations, cases, etc. I don't want to get embroiled in either trying to refute the allegations or researching more now...

But I just want to point you to this book; I've read it (just download it here) and it told me how the richest people in the world became rich (no, it's not a self-motivation book. Those books are worthless. The writer is an economist and a PhD holder) through various means that are less than... pure. The ways that Sandi got his riches were almost certainly not through that straight of a path. Still, I've met him personally a few times, I've talked with people close to him and one of them is my close friend, so suffice to say that I believe that he has integrity, at least in term of making Jakarta better and in the term of being a good, competent public servant.