Check the source article for interview video excerpts
"Cook said Apple tried to help the FBI with other technological solutions, "significant advice" on how the iPhone might be cracked. But Apple does not want to go as far as the FBI says it now needs -- writing software to get around the phone's security measures. Cook called it "the software equivalent of cancer."Apple’s Tim Cook calls FBI request to crack terrorist’s iPhone ‘bad for America’ - The Washington Post
"What is at stake here is can the government compel Apple to write software that we believe would make hundreds of millions of customers vulnerable around the world, including the U.S., and also trample civil liberties that are the basic foundation of what this country are made of ," Cook said."