He was an iconic physicist who worked tirelessly to peer into the deepest mysteries in our universe, so you might have expected him to be somewhere towards the top of the smart-scale.
But Hawking didn't hold back while giving his opinion on people who gloat about their IQ.
In a 2004 interview with the New York Times, Hawking was asked what his IQ was.
I have no idea.
People who boast about their IQ are losers.
It's interesting to consider Hawking's point of view in the context of former reality TV star and now leader of the free world Donald Trump.
Trump has been in the news for his long-lasting IQ obsession, which cropped up again in October last year after he offhandedly challenged his then-Secretary of State Rex Tillerson to an IQ test after Tillerson called him a 'moron'.
If only there were some organisation known for measuring IQ.
We could finally settle this matter once and for all.
The dig at Tillerson is just the latest after years of boasting.
Take the president's claims –- as you have probably already learned to do after almost a year of his presidency – with an ocean's worth of salt.
After all, this is the same man who boasted about his own humbleness in a bizarre interview last year.
I think I'm much more humble than you would understand.
The very best, most humblest man ever in fact.
It doesn't take a genius not to spot the irony in that statement.