Dyson is considered the best physicist without a Nobel Prize, or a Ph.D. Interesting distinction.
Looks like he skipped a grade or two.
From the article:
When Einstein died in 1955, there was an opening for the title of most brilliant physicist on the planet. Dyson has filled it.
BTW, he has a daughter, Esther, who is a Silicon Valley VC and former gf of Mr. Bill.