"I don't know anyone who would be comfortable with someone who behaves this way having his finger on the button. We're liable to wake up one morning and Donald, if he were president, would have nuked Denmark." — Republican presidential candidate Ted Cruz on Donald Trump, who accused the Texas senator of "fraud" and called for a do-over of the Iowa caucuses.
"I do not know any progressive who has a super PAC and takes $15 million from Wall Street. That's just not progressive." — Democratic presidential candidate Bernie Sanders on Hillary Clinton, putting the former secretary of state on the defensive over her liberal credentials.
"There's no other witness to the promise. The rabbit is in the hat and you want me at this point to assume, 'Hey, the promise was made, judge. Accept that.'" — Montgomery County (Pa.) Judge Steven O'Neill, who refused to throw out the sexual-assault case against Bill Cosby.