Xiko Acis is a Brazilian philosopher and independent researcher working in ethics and moral philosophy. His research focuses on the conceptual structure of practical reasoning and on the historical development of the relationship between ethics, morality, and law. A central concern of his work is the progressive identification of ethics with normativity in the Western tradition and the consequences of this transformation for contemporary moral reasoning.
His research engages with the history of moral philosophy from classical Greek thought to modern philosophy, examining how the conceptual architecture of ethical reflection was gradually reo…
Xiko Acis is a Brazilian philosopher and independent researcher working in ethics and moral philosophy. His research focuses on the conceptual structure of practical reasoning and on the historical development of the relationship between ethics, morality, and law. A central concern of his work is the progressive identification of ethics with normativity in the Western tradition and the consequences of this transformation for contemporary moral reasoning.
His research engages with the history of moral philosophy from classical Greek thought to modern philosophy, examining how the conceptual architecture of ethical reflection was gradually reorganized through Roman, medieval, and modern interpretations of law, duty, and obligation. In particular, he investigates the role of Cicero in articulating a conception of law as recta ratio naturae, and how this formulation contributed to a structural convergence between ethical reflection and normative systems that continues to shape modern moral theory.
More broadly, his work explores the philosophical conditions for restoring the autonomy of ethical inquiry as a form of rational investigation oriented toward the common good, distinct from both moral prescriptions and juridical norms.
In addition to his philosophical research, he has developed an approach to ethical reflection based on analytical dilemmas (ABD – Dilemma-Based Analysis), intended to stimulate critical judgment in contexts where rule-based moral frameworks prove insufficient for responsible decision-making in institutional and organizational settings.
