Elon Musk by Walter Isaacson"The big question in the public mind about Elon Musk, as a London cabbie once put it to me, is whether he’s “a pillock or a genius”. The quick answer is that he’s both; a better answer is that there’s a lot of detail between those two extremes – so much so, in fact, that it takes Walter Isaacson 688 pages to cram it all in. But cram it in he does." From The Guardian