President Bush held what he called “the ultimate exit interview” on Monday, using the final news conference of his presidency to dispute the idea that the nation’s “moral standing has been damaged” by his actions and to warn President-elect Barack Obama that, despite the turbulence in the economy, his most urgent priority must be fighting “an enemy that would like to attack America and Americans again.”

Looking back over the long arc of his turbulent presidency, Mr. Bush was by turns impassioned and defiant, reflective and light-hearted, even as he conceded that some things “didn’t go according to plan.” He confessed a litany of mistakes, refused to talk about pardons, cautioned the Republican Party to be inclusive and wondered aloud what it would feel like to make coffee for his wife, Laura, at their ranch in Crawford, Tex., on the morning after Mr. Obama takes his place.