Democratic presidential nominee Joe Biden is facing a new plagiarism accusation following his convention speech on Thursday night, Aug. 20.

Biden concluded his speech by saying, “For love is more powerful than hate. Hope is more powerful than fear. Light is more powerful than dark.” He later tweeted the message on social media platform.

However, social media quickly pointed out that Biden’s words were extremely similar to ones of Jack Layton, the former leader of Canada’s left-wing New Democratic Party, who wrote in a letter before he died in 2011, “My friends, love is better than anger. Hope is better than fear. Optimism is better than despair.”

Coincidently, Biden made those remarks two days before the ninth anniversary of Layton’s death.

This is not the first time Biden has been accused of plagiarizing, he was caught using quotes in speeches from Sen. Bobby Kennedy, President John F. Kennedy and Neil Kinnock, a British Labour Party leader without any attribution. Biden has even admitted that he had committed plagiarism during his first year of law school.

“I was mistaken, but I was not in any way malevolent,” Biden explained.

The controversies surrounding plagiarism led to Biden’s decision to stop his 1988 presidential race in September 1987.

“Although it’s awfully clear to me what choice I have to make, I have to tell you honestly I do it with incredible reluctance and it makes me angry. I’m angry with myself for having been put in the position—put myself in the position of having to make this choice,” Biden said.

”And I am no less frustrated at the environment of presidential politics that makes it so difficult to let the American people measure the whole Joe Biden and not just misstatements that I have made,” he added.

Earlier this year, he faced plagiarism claims again when it was revealed he borrowed some passages from other documents for his 2020 climate plan without attribution. The campaign corrected the error, reported Just The News.

Meanwhile, others social media users noted that Biden’s 2020 DNC acceptance speech is a copied version of 2008.