In just one blistering tweet Wednesday, the astrophysicist threw major shade on the Trump administration’s controversial climate change policies — and suggested why it was considering withdrawing from the landmark deal in the first place.

“If I and my advisors had never learned what Science is or how & why it works, then I’d consider pulling out of the Paris Climate Accord too,” he wrote.

The post has since gone viral, with many of his followers appearing to agree with his sentiment:

Trump plans to announce his decision on the Paris Accord via a press conference from the White House Rose Garden at 3 p.m. ET on Thursday.

Source