Time is not constant and one minute is not the same length as another.

There are two questions: where have you come from, and where are you going? But the brain doesn't have separate regions for the past and future; only the present is differentiated by the brain.
We split time into three parts. The brain, it seems, splits it twice only: now, and not now.

The Hopi, an Indian tribe, have a language as sophisticated as ours, but no tenses for past, present and future. The division does not exist. What does this say about time?

Matter, that thing the most solid and the well-known, which you are holding in your hands and which makes up your body, is now known to be mostly empty space. Empty space and points of light. What does this say about the reality of the world?

You never give away your heart; you lend it from time to time. If it were not so, how could we take it back without asking?

Time that withers you will wither me. We will fall like ripe fruit and roll down the grass together. Dear friend, let me lie beside you watching the clouds until the earth covers us and we are gone.

The future is foretold from the past and the future is only possible because of the past. Without past and future, the present is partial. All time is eternally present and so all time is ours. There is no sense in forgetting and every sense in dreaming. Thus the present is made rich.