As the country prepares to politely show President Bush out the door Tuesday, preparations are under way for a highly ambitious and active post-presidency. In addition to hitting the lecture circuit and writing his memoirs, the plan includes creating a new think tank dedicated to expanding democracy and advancing education reforms in the mold of No Child Left Behind. "This is not going to be a 'George Bush Is a Wonderful Person Center,' or 'The Center for Republican Party Campaign Tactics,'" Bush said in an interview recently. "It's going to be a place of debate, thought, writing, lecturing." Bush's plan to create a policy center is similar to past presidents, historians say, most notably Herbert Hoover and Richard Nixon -- two leaders often compared to the current president for a variety of less flattering reasons.