Swami Dayananda Saraswati was a renowned Vedic scholar and teacher who dedicated his life to promoting the teachings of the Vedas and spreading the message of Indian culture and spirituality. He was the founder of the Arya Samaj, a reform movement that aimed to revive the Vedic way of life and promote social equality.

Throughout his life, Swami Dayananda wrote numerous books and commentaries on various Vedic texts and philosophical concepts. Some of his most notable works include:

1. Satyarth Prakash (The Light of Truth) - This is considered to be Swami Dayananda's magnum opus, in which he presents a comprehensive and rational interpretation of the Vedas. It also discusses various social, political, and religious issues, and advocates for the upliftment of women and marginalized groups.

2. Rigvedadi Bhashya Bhumika (Introduction to the Commentary on the Rig Veda) - In this work, Swami Dayananda provides a detailed introduction to his commentary on the Rig Veda, one of the oldest and most sacred texts of Hinduism.

3. Bhagavad Gita Bhashya (Commentary on the Bhagavad Gita) - Swami Dayananda's commentary on the Bhagavad Gita is considered to be one of the most authoritative and comprehensive interpretations of this ancient Hindu scripture.

4. Tattva Bodhini (The Knowledge of Truth) - This book delves into the principles of Vedanta and provides a thorough explanation of the concept of self-realization and the path to attaining it.

5. Vedanta Sara (Essence of Vedanta) - In this work, Swami Dayananda presents the core teachings of Vedanta in a concise and accessible manner, making it a popular introductory text on the subject.

Apart from these, Swami Dayananda also wrote commentaries on other Vedic texts such as the Yajur Veda, Atharva Veda, and Upanishads. He also wrote extensively on topics such as yoga, meditation, and the role of religion in society.

Swami Dayananda's writings are known for their clarity, logical reasoning, and deep understanding of Vedic philosophy. They continue to inspire and guide generations of spiritual seekers and scholars.