This document summarizes César Schirmer dos Santos' analysis of Annalisa Coliva's constitutive theory of self-knowledge. Coliva argues that there are two types of beliefs - commitments and dispositions - which lead to two different forms of self-knowledge. Commitments involve deliberation, control and responsibility, allowing first-personal knowledge of one's own beliefs. Dispositions lack these features, only permitting third-personal knowledge. The document also discusses debates around whether necessarily believing one believes P if one is committed to P, and examines Coliva's responses to objections from self-deception and Geach's point about negation.