Here are some of his notable works:
Theosophical Works:
* Esoteric Buddhism (1883): This book is considered his most famous work, summarizing the teachings of Madame Blavatsky, the founder of Theosophy. It explored ideas like karma, reincarnation, and the occult.
* The Occult World (1881): This book was a collection of articles and essays written by various authors, including Sinnett, about occult phenomena and spiritualism.
* The Growth of the Soul (1895): A work exploring the evolution of the soul through various stages of existence.
* The Rationale of Mesmerism (1879): This work addressed the topic of hypnotism and its spiritual implications.
* Early Days of Theosophy (1922): Published posthumously, this book offered personal insights into the founding of the Theosophical Society.
Other Writings:
* The Indian Superstitions (1881): This work explored the beliefs and practices of various indigenous cultures in India.
* The Indian Uprising of 1857 (1883): A historical account of the Sepoy Mutiny.
* A Colonial Governor (1896): A novel set in the colonial era.
* The Queen's Messenger (1903): Another novel.
Sinnett's writings were popular in his time, but they are often criticized for being based on speculation and second-hand information rather than scientific evidence. Nevertheless, his work helped to popularize theosophical ideas and contributed to the development of modern esoteric thought.