One must always maintain one's connection to the past and yet ceaselessly pull away from it. To remain in touch with the past requires a love of memory. To remain in touch with the past requires a constant imaginative effort.
Consider the past and you shall know the future.
I've never tried to block out the memories of the past, even though some are painful. I don't understand people who hide from their past. Everything you live through helps to make you the person you are now.
We must welcome the future, remembering that soon it will be the past; and we must respect the past, remembering that it was once all that was humanly possible.