As he starts his final four years in the White House, President Bush is by far the biggest agent of change in his own cabinet. Whether he's remaking his team or plotting his second-term policies, Bush's leadership style belies his caricature as a disengaged president who is blindly loyal, dislikes dissent and covets his own downtime. In fact, Bush's aides and friends describe the mirror image of a restless man who masters details and reads avidly, who chews over his mistakes and the failings of those around him, and who has grown ever more comfortable pulling the levers of power. Of course, those closest to Bush have a vested interest in singing his praises. But they also make a compelling case that the president is a more complex and engaged character than his popular image suggests. And that he—not Karl Rove, Dick Cheney or anyone else—bears the full weight of responsibility for the ultimate successes and failures of his reign.
To anyone who really wants to better understand Bush, friend or foe, I suggest that you read the whole article.