"De Anima" is a foundational philosophical treatise that explores the concept of the soul and its relation to the body. The work delves into the nature of life itself, categorizing different kinds of souls possessed by different kinds of living things, such as plants, animals, and humans. It discusses the faculties of the soul, including the nutritive, perceptive, and intellectual aspects, and investigates their functions and interactions. The treatise also examines issues of perception, cognition, and memory, arguing that the soul is the principle of life and the source of all vital functions, ultimately aiming to define the essence of life and the basis of all living activities.

The book is a concise manual of ethical advice compiled by Arrian, a student of the Stoic philosopher Epictetus. This practical guide provides philosophical teachings on how to live a virtuous life, emphasizing the importance of personal freedom and the control of one's emotions. It advocates for focusing on what is within one's power—distinguishing between what one can change and what one cannot—and stresses the significance of developing resilience to external circumstances. The text is foundational in the discipline of Stoicism, offering insights into achieving peace of mind and living in harmony with the natural world.

This book provides a comprehensive analysis of the Platonic dialogue centered on the figure of Gorgias, a renowned Sicilian orator and sophist. It delves into the philosophical conversations between Socrates and Gorgias, along with other interlocutors, exploring themes such as rhetoric, justice, and the nature of the good life. The text examines the intricacies of Socratic dialectic and the contrast between philosophical inquiry and the art of persuasion practiced by sophists. Through this exploration, the book sheds light on the enduring questions about the relationship between power, knowledge, and ethics in the context of human discourse and action.