Reid begins his attack on the RTM by quoting Locke's concession that the metaphor of the mind as a repository of ideas is not to be taken strictly.  For on the standard Early Modern view, an idea is necessarily consciously perceived. Stored ideas of which one is not currently aware are not possible; a non-conscious idea is an unperceived idea and hence an impossibility.  So Locke notes that to say that the mind is a storehouse of ideas is only to say that the mind has: