Memory
The Invention of Morel shows how important memory really is. The fugitive on the island thinks that he is going insane, which would be a product of his mind and memory. He becomes scared of this, and the reader comes to realize what a broad effect memory has on a life. Also, Morel has created a machine that can repeat time for certain people. Although this may seem enchanting at first, living the same day over and over can drive someone insane. People are built on new, exciting memories, not only the good ones.
Love
Love is a common theme in literature, since it ties in so deeply to almost every life. In the novel, the fugitive falls in love with Faustine, but Morel is already talking with her. He tries to do everything that he can to capture Faustine's attention, but she does not even see him. The fact that no one can see the fugitive in the beginning of the book, including Faustine, shows how the fugitive might not feel wanted, and has failed all of his attempts to capture the attention of someone he loves.
Greed
Morel is a greedy man, and we can see that right off the bat. He has everything he wants, and he has created a machine that can replicate time. However, he starts to take things too far, capturing souls and all to repeat memories. Morel knows that there is a chance that any of the tourists could die, but he gladly ignores that so he can indulge in his own fantasy.
