Beyond providing an explanation of what can be observed in nature, and beyond formulating equations explaining the phenomenaPhenomena, phenomenon, we are in quest for the origin of the physical and mental realms, driven by the curiosity for more fundamental truth. In this chapter, by paying attention to the common factors together with the differences among philosophical concepts, we give a unifying common language based on the temporal toposTemporal topos, t-topos theory developed in the earlier chapters.