Past is no more, future is not yet, so those who live in the past don't live, they only think they live. And those who live in the future can't live, because how can you make anything out of the future which has not come yet?
But that's how people are living. Millions live in the past, and the remaining millions live in the future, and it is very rare to find a person who lives herenow. But that is the real person, that is the person who is really alive. Life needs only one thing: to be rooted in the present. There is nowhere else for it to be rooted. Past is memory, future is imagination; both are unreal.
The real is this moment -- thisness.
-Rajneesh