"Envy and isolationism" were the forces that contributed to the U.K.'s decision to leave the European Union and if those forces grow stronger, the human race is at risk, according to world-renowned physicist Stephen Hawking.
Writing in The Guardian newspaper on Friday, Hawking said that the June 23 vote was down to British attitudes towards wealth and money and that it was time for an "honest" debate about "the role that wealth does and doesn't play in our society."
Hawking had been a part of the remain camp in the lead up to the referendum, saying that it would be a mistake for Britain to leave the union. He had argued that Britain risked being isolated and that crucial funding for scientific research was at risk.
The vote to leave the EU was largely seen as having been driven by concerns over the U.K.'s sovereignty and immigration, although there were widespread regional and socio-economic differences between those voting to leave and those wanting to stay in the EU.