Memory
'To what place are you going, my dear Phædrus, and from where have you come?'
Plato, The Phædrus
'If anyone recalls anything to mind, it is necessary that at some time or other, he must have previously known it.'
Plato, The Phaedo
Although our surroundings may change, and our senses adapt, though forgotten, the Ideas remain for all of time in the same way.
Note from the editor of Classical Philosophy