"The World of Dreams" by Havelock Ellis aims to take a look at what goes on in the human mind while it's immersed in its dreaming state. Beginning by discussing the pitfalls of this sort of study, especially at the time of the book's writing, it goes on to look at the connection substances, color, attention, and more have with one's ability to remember and manipulate their dreams. As such, this book served as an insightful text in the study of one of the most curious parts of existence.