Energy conservation is true?

The law of energy conservation say that
"the total amount of energy in the universe is constant." right
Now,for movement in 4th dimension(along the time) energy is required and we all need this...
But when we consider Universe as a isolated system then then energy can not be transferred through universe according to concept of isolated system. So energy is not required for universe for the movement in 4th dimension(along the time).
So energy is required for us &it is not required for universe how is this possible??
What u say???

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