Stephen Hawking had a brilliant response when asked if he had an equation for time travel

Stephen Hawking’s sense of humour is well-documented.

Following the death of the legendary cosmologist on Wednesday, the Twitter account “Letters of Note” shared a letter he wrote to The Face Magazine in 1995.

Stephen Hawking’s reply to The Face magazine when, in 1995, they asked him for an equation for time travel.

https://t.co/JLFLfhz5kA pic.twitter.com/IcPbOUjqmT

— Letters of Note (@LettersOfNote) March 14, 2018

An excellent response.