An entirely and conventionally topographical metaphor of the psychical apparatus is to be completed by invoking the existence of force and of two kinds of processes of excitation or modes of its discharge: So let us try to correct some conceptions intuitive illustrations: Anschauungen which might be misleading so long as we looked upon the two systems in the most literal and crudest sense as two localities in the mental apparatusconceptions which left their traces in the expressions 'to repress' and 'to force a way through.'