Such an incredible mind. I was on a trip with my uncle once, who is an actual rocket scientist ? I brought a copy of Hawking's book "A Brief History of Time." My uncle read it overnight and loved it. I tried to read it and couldn't get past the first chapter. I could follow the reasoning for a while and then suddenly I was lost. I tried again to understand it. And again. Nope. My uncle suggested that I just keep reading and power through it but I just couldn't get it.
Considering the severity of his disease, the world was fortunate to have him with us for so long. RIP.