John F. Kennedy, 1961:

I believe that this nation should commit itself to achieving the goal, before this decade is out, of landing a man on the Moon and returning him safely to the Earth.

George W. Bush, 2006:

We will also fund additional research in cutting-edge methods of producing ethanol, not just from corn but from wood chips, stalks, or switch grass. Our goal is to make this new kind of ethanol practical and competitive within six years.