The purpose of this thesis is to study the "Yes" in James Joyce`s Ulysses. Joyce himself says that Yes means the cunt of a woman, an organ whose meaning is associated with sex. He also employs it as embodying woman`s `acquiescence`, `relaxation`, and `the end of resistance. The word Yes certainly has more implied meanings than Joyce intends it to do. It has such various meanings as `submission`, `affirmation` and `conciliation` to the opposite sex. The sexuality between man and woman can consequently have an effect on their relationships as a whole. And that can be a crucial motif which allows a person to find out his own identity. The main characters in Ulysses, Leopold Bloom, Molly and Stephen Dedalus, have shown us the conflicts with their own opposite sex. The main sources of their conflicts or wanderings come from the lack of submission, affirmation and conciliation to the opposed sex. One of the main themes of Ulysses is the efforts of the major characters to try to escape from the conflicts or wanderings caused by not having a conciliation with the other sex. This is the crucial message of `submission`, `affirmation`, and `reconciliation` which the word Yes gives us.