In a series of statements made at a global climate summit in Paris to the Associated Press, California Governor Jerry Brown made one of his most passionate pleas yet to President Donald Trump on climate change.

“It’s time for President Trump to join the rest of the world, not oppose it,” said Brown in a series of statements blasting the Trump Administration’s dismissals on climate change.

“The fires are burning in California,” he said. “They’ll be burning in France, burning all around the world.”

“The rest of the world is very serious about climate change,” said Brown. “So are the scientists.”

These were not the only comments directed at President Trump in recent weeks.

Last week, during a trip to survey wildfire damage in Ventura County, Calif., Brown continued his full-court press, arguing that climate change was a contributing factor and dismissed theories about human activity not being responsible for climate change.

In a Dec. 10 interview on 60 Minutes, Brown also issued poignant sound bytes at Trump, blasting the president for not fearing “the wrath of God,” as well as for having a “reckless disregard for the truth and for the existential consequences that can be unleashed.” This preceded pleas for the U.S. to re-enter the Paris Climate Accord.

Brown’s passion for climate change has, in part, stemmed from first-hand experience in his state. Over the past couple of weeks, Northern California has been battling raging wildfires, resulting in roughly 40 deaths and billions of dollars in property damage. Brown sees these as a consequence of global climate change.

In response, Trump issued a state of emergency, allowing federal resources to help state and local authorities battle the fires through the Federal Emergency Management Agency. However, Trump continues to offer a lack of support for the theory itself.

President Trump’s lead up to the Paris Climate Accord withdrawal saw plenty of incendiary comments on climate change. In a 2012 Twitter post, Donald Trump said the notion of global warming was “created by and for the Chinese in order to make U.S. manufacturing non-competitive.” Separate comments at campaign rallies have also seen Trump label climate change as an “expensive hoax” and a “money-making industry”