The past however hard we try remains as memories. The present moves forward only. Future is an expectation, a desire. So basically everything is on the mind. Just that we keep aging as we ace towards our wishes and burning desires. What I do not know is why is life given to me?

A life cycle that includes memories of the past, the reality of the present, and dreams of the future. One day the life cycle will end.

During the nineties of the last century, historians and computer scientists created together a research agenda around the life cycle of historical information. ....

Article Semantic technologies for historical research: A survey

w/o a past, we cannot discern and anticipate our future.

Rich

>"How are past, present, and future related in the viewpoint of the history?" I would assume that the question is not about a personal history but the history of humankind.

Humanity is not unified globally and never was. Therefore there were, and there are, a lot of subjective viewpoints from this or that social structure view angle. By their nature, all such views of past, present, and future are subjective. Respectfully, any conclusions about the past, present, and future and their relations with each other are subjective too.

In my book "Subsurface History of Humanity: Direction of History," I excluded social structures from the analysis. That and some other advances allow me to find out the direction in which humanity has been moving during the last 44 thousand years. That direction is linking together past, present, and future. That direction is "objective." It does not depend on any observer or societal subjective viewpoints.