There may not be a lightness to his step, a lilt in his voice or a bit of jauntiness returned to his manner. The office ages everyone prematurely, and makes spontaneity all but impossible. But President Obama is acting like a man who’s been given the political equivalent of a testosterone boost.

Perhaps the best thing to happen to him was the crushing blow his party took in the midterm elections. Come January, Republicans will have their largest House majority in 84 years — since Herbert Hoover was president. Granted, no politician wants to join Hoover and history in the same sentence. But Obama is not cowering or conceding. He’s been liberated by defeat, becoming the president that many of his supporters hoped he would be.

He promised to be transformative. Instead, especially in the last two years, he’s been listless, passive, a spectator to his own presidency. Rather than setting things in motion, he reacted to events. Even Ebola, the great scare that prompted so much media hysteria it was awarded Lie of the Year by PolitiFact, was somehow his fault. No more. Of late, the president who has nothing to lose has discovered that his best friend is the future.

On normalizing relations with Cuba, on a surprising climate change initiative with China, on an immigration gamble that’s working, and executive orders to protect the world’s greatest wild salmon fishery in Alaska or try to root out gender pay disparities, Obama is marching ahead of politicians fighting yesterday’s wars. In setting an aggressive agenda, he has forced opponents to defend old-century policies, and rely on an aging base to do it.