Though Rudolf Steiner is best known for his cultural influence in fields such as education, agriculture, and medicine, it is often forgotten that he made his contribution as a spiritual teacher. What he taught was, above all, a way of spiritual knowledge - a path of inner development to reconnect the spirit in us with the spirit in the universe. This book brings together for the first time a series of fundamental lectures on beginning a path of practice. Since it is by one of the great spiritual masters of the twentieth century, its wisdom and practicality are outstanding. Here readers will find descriptions of various practical exercises to develop the necessary moral qualities and states of consciousness that inner development requires. More advanced practices and techniques are also discussed. This is not just a book for beginners. Wherever you are on the path - whatever path you are on - this book can be a helpful companion.