Imagination

On a totally unrelated note... The Power of Imagination We follow our own imaginations of the future. Our behavior is determined by the (imagined) consequence of this or that action. Imagination seems important. Memory and imagination seem to be the same faculty, or closely related. Our memory of the past is the only thing of the past that still exists (not including physical artifacts). Imagine being cut off from all that you have experienced thus far. How crippled would you be? It is only the power to imagine that is keeping you from this horrible existence. Reasoning is the faculty of the human mind that distinguishes us from lower animals. "2+2=4", and therein lies civilization. Yet memories are so unexpressably important and they are as non-rational as dreams. How can this be? Perhaps reasoning and imagination are two branches of the human mind, connecting at a point, drawing "nourishment" from the same source, while diverging. Thoughts? What are the main questions to be asked here, and whom can I invest into in order to understand imagination better?