<Ul> <Li> Seventh Letter </Li> </Ul> <Dl> <Dd> 342--345: The epistemology of Forms . The Seventh Letter is possibly spurious . </Dd> </Dl> <Dd> 342--345: The epistemology of Forms . The Seventh Letter is possibly spurious . </Dd>

The realization that objects exist even when they are not within view is called