There is no future without a past, because what is to be cannot be imagined except as a form of repetition.
Time is not outside us, but inside. Only we live with past, present, and future, and the present is too brief to experience anyway; it is retained afterward and then it is either codified or it slips into amnesia.
The faculty of memory cannot be separated from the imagination. They go hand in hand. To one degree or another, we all invent our personal pasts. And for most of us those pasts are built from emotionally colored memories.