Disgraced cyclist Lance Armstrong has not only spent years vehemently denying using banned performance-enhancing drugs; he also has viciously attacked those who told what they knew about doping in the sport and implicated him in the process.

In what could now be seen as supreme hypocrisy -- or a new definition of "chutzpah" -- Armstrong even sued agencies that accused him of doping -- in some cases accusing those agencies of libel.

Here is a look back at a dozen quotes that highlight how far -- or, some say, how low -- Armstrong has been willing to go.

Attacks

"Desperate for attention and money"

Fellow cyclist Floyd Landis was stripped of his 2006 Tour de France title after testing positive for synthetic testosterone. He ultimately came forward and spoke about other cyclists, saying he wanted to "clear my conscience."

"Armstrong and his camp hit back swiftly, forcefully and with a smooth coordination that comes from years of practice," Sports Illustrated reported.

Last year, in a lawsuit calling for the U.S. Anti-Doping Agency to drop charges against Armstrong, Armstrong's attorneys described Landis as "desperate for attention and money." Landis was acting against Armstrong "with his cycling career, finances, and personal life in shambles," the attorneys argued.

There has long been no love lost between the two men. Sports Illustrated reported in 2010 that Landis predicted Armstrong "is going to jail."

"I'm going to make your life a living... f---ing ... hell," Armstrong allegedly said