FILE - From left, President Barack Obama, former President Jimmy Carter, first lady Michelle Obama and former President Bill Clinton wave from the Lincoln Memorial in Washington during a celebration of the 50th anniversary of the March on Washington where Martin Luther King Jr. spoke, Aug. 28, 2013. (AP Photo/Charles Dharapak, File)

Former Vice President Al Gore praised Jimmy Carter for living “a life full of purpose, commitment and kindness” and for being a “lifelong role model for the entire environmental movement.”

Carter, who left the White House in 1981 after a landslide defeat to Ronald Reagan. concentrated on conflict resolution, defending democracy and fighting disease in the developing world. Gore, who lost the 2000 presidential election to George W. Bush, remains a leading advocate for action to fight climate change. Both won Nobel Peace Prizes.

Gore said that “it is a testament to his unyielding determination to help build a more just and peaceful world” that Carter is often “remembered equally for the work he did as President as he is for his leadership over the 42 years after he left office.”

During Gore’s time in the White House, President Bill Clinton had an uneasy relationship with Carter. But Gore said he is “grateful” for “many years of friendship and collaboration” with Carter.