Secretary of State John Kerry compared himself to Winston Churchill, Abraham Lincoln and other great historical luminaries for having the courage and tenacity to tackle the most heinous enemy plaguing mankind — climate change. “My heroes are people who dared to take on great challenges without knowing for certain what the outcome would be,” Kerry said in an address to the Atlantic Council on Thursday. “Lincoln took risks, Gandhi took risks, Churchill took risks, Dr. King took risks, Mandela took risks, but that doesn’t mean that every risk-taker is a role model.”