The time is now, the place is here. Stay in the present. You can do nothing to change the past, and the future will never come exactly as you plan or hope for.
A generation which ignores history has no past and no future.
Microwavable ice cream is the future. Don’t wait for love to melt all over your crotch. Scoop some Ice Cream Soup today.
Look not mournfully into the past, it comes not back again. Wisely improve the present, it is thine. Go forth to meet the shadowy future without fear and with a manly heart.
You spend your whole life stuck in the labyrinth, thinking about how you'll escape one day, and how awesome it will be, and imagining that future keeps you going, but you never do it. You just use the future to escape the present.
You can't base your life on the past or the present. You have to tell me about your future.
The six squares of our love didn’t add up to a cube. Still, I took the oddly-shaped box down to the post office and tried to mail it into the future, when I’d be more prepared to open it.

Our duty is to preserve what the past has had to say for itself, and to say for ourselves what shall be true for the future.
Tristan was silent for a few moments, looking at the leaves before them. "Life isn't about the past and the future. It's about today." He paused. "It's about five minutes from now and two seconds ago. It's moments, you know? Not years. Years aren't what define us.
These were the lovely bones that had grown around my absence: the connections-sometimes tenuous, sometimes made at great cost, but often magnificent-that happened after I was gone. And I began to see things in a way that let me hold the world without me in it. The events that my death wrought were merely the bones of a body that would become whole at some unpredictable time in the future. The price of what I came to see as this miraculous body had been my life.