The Past (n.) can be used because it falls apart: it is a net of isolated points with nothing in between.
The Past (n.) of a living thing is the inside of its membrane; the future is what waits outside, ready to be eaten or to hurt it.
The Past (n.) cannot be made conscious, since it is the condition of all consciousness, but it can be expressed, and expressing it changes the one expressing.
The Past (n.) is truly past only for stones: a crystal grows over its own buried layers, while a living thing stays contemporary with every one of its parts.
The Past (n.) and the future (n.) do not exist before memory and imagination; memory creates the one as imagination creates the other.