Ok, I read parts of his books back in the days and this jogged those memories ... including pinging friends who used those books more than me. Was curious what

Ok, I read parts of his books back in the days and this jogged those memories ... including pinging friends who used those books more than me. Was curious what his net worth was ... and found answers in single digit millions, except one article that said 175M but that was a 20 year old article. (I think given the flavor of the week, I can safely blame google for not finding the right links :)). I did read the wikipedia entry about him but still wonder about the ups and downs of his life and how he is doing nowadays at 78. If someone has a more recent profile, even a hagiography, please do share a link.