Remove the mountain

There is a old man lived in the foot of the mountain.because the mountain is too high and big.Suffer from blocked mountain roads, and if go out he has to detour.One day the old man decided to bulldoze the mountain in order to making a fluent way to go out.Every day he was digging and building the roads.
He had a neighbor,tried to dissuade him don't do it."You're too old and can not accomplish this difficult task".
But the old man replied,"Even if I died,my son still can work,Even if my son died, grandchildren can still work,Children and grandchildren is no end, but the hill is not higher up,it's don't need to worry can not complete the work."
Finally, God knows this story of the old man,very impressed by him,So to play a supernatural power, remove the mountain.