When it comes to aging ambition, I have considerable empathy. I'll be 70 years old when we hold our next presidential election. We baby boomers have benefited from stunning advances in health care that now allow for an active life many decades longer than our parents could ever have envisioned. I'm in no great hurry to implement my living will. In fact, my current plan is to go back to school full time in 2019, hopefully in Ireland, to earn a master's degree on the GI Bill. I don't want to preach the gospel of lifelong learning, I want to live it.