Another theme is exploration. Burton was an explorer on earth, and decides to continue his profession on the new planet. Exploration is portrayed in the novel as a positive human characteristic, and this is very typical of the science fiction in the era in which the novel was written. Burton is chosen as the hero of the novel because he is an explorer, and exploration satisfies the creative and constructive drives of humankind within the novel. It is no coincidence that Burton, a fervent explorer, also champions rationality and democracy wherever he goes. According to the novel, exploration is about knowledge and responsibility.