The circumstances of Defoe as an author and a puritan, accompanied by the plot of the novel itself, influence the manner in which Crusoe as a character is motivated to create and construct his shelters. Defoe’s knowledge and understanding of construction would dictate the manner that the shelters would be constructed by Crusoe’s character in the novel. Defoe’s puritan views would also add an idealistic interpretation of what Crusoe’s shelters and lifestyle would be portrayed as. Crusoe’s hard working mentality, and his constant strive for improvement are examples of this, and are prevalent throughout the story. The external pressures of the island would also affect how the shelters would come to be, influencing how they might protect Crusoe against the elements and other threats, or how they would be constructed from the materials in the surroundings. The progression and “renovation” of his shelters, as well as the construction of new elements, such as the Bower would also portray Crusoe’s inclination to strive for more comfort after having his basic needs met. This evaluation of the narrative draws many parallels to the hierarchy of needs and how Crusoe responds to his ascent on that hierarchy. Defoe’s symbolizes the construction of a civilization on a savage island, by building Crusoe’s character up in a progression of developments on the shelters themselves.