Does Life has a beginning or an end ?

Nature has answers to most of the questions which come in human mind.Nature as well have been an inspiration to most of the innovators and inventions..Our scientists and spiritual teachers the most famous one being Buddha have compared Life with a river....The insight which Buddha got while watching a river were similar to what Newton got while watching a apple fall...My memories of what I read earlier got revived while reading one of the Paul Cohelo's books last week

Many of us sometime do had questions about life and where we were before birth and where we will go after death.. While watching a river flow,Buddha said that river too is like life..where this river was before it took the form of a river  and where it will go after it will disappear in sea.So where river was before it took shape of a river and where it will go when it disappear in sea....Appearing and Disappearing of life and river is similar to death and birth..but life and river were always there in another form...Also law of conservation of energy.Energy can neither be created nor be destroyed..It just transforms or changes forms...River becomes vapor in clouds and Clouds become rain and it becomes snow..and then becomes river... .So clouds are like soul of river in case there is something called soul otherwise we can say life transforms  into another life...like river transform as cloud All elements of human body after death go where they belong to 

Life is all around us not only in human beings and it was always there even when human beings were not there. 

Quoting from Paul Cohelo's book - Rivers that have just been reborn in the sea. They will rise to the sky, and remain there until, for whatever reason, they once again become rain and fall to earth.The rivers return to the mountains, but carry with them the wisdom of the sea. That is how you discovered those secrets we had never discussed. You are a river.You have already run down to the sea, and you know its wisdom. You have died and been reborn many times. All you have to do is remember .