Freud wrote "Three Essays on the Theory of Sexuality", sometimes titled "Three Contributions to the Theory of Sex", in 1905. It explores and analyzes his theory of sexuality and its presence throughout childhood. Freud’s book describes three main topics in reference to sexuality: sexual perversions, childhood sexuality, and puberty. His first essay in this series is called "The Sexual Aberrations". This essay focuses on the distinction between a sexual object and a sexual aim. A sexual object is the object that one desires, while the sexual aim is the acts that one desires to perform with the object. 