His recollective monologues depict the multitudinous thoughts and feelings which pass through his mind. Both narrators can be theoretically analysed through the psychological theory of solipsism. Defined as “the view that the self is all that can be known to exist”, the theory suggests that each individual is an image created through one 's own mind. The theory can be directly pinpointed without the novel, through quotes such as “I need you, the reader, to imagine us, for we don 't really exist if you don 't.” Some Philosophers argue that the self is the only real and independent reality we know, and we cannot be sure that other individuals actually exists outside of our own minds (this is know as metaphysical solipsism). By this principle,