This book forms a companion volume to the Swami's Universal Prayers. In the Introduction a detailed and systematic account of the theory and practice of spiritual life is given. The main body of the book containing Sanskrit texts and their English translations, presents a large number of important scriptural passages through which the ancient sages and seers of India enlighten us on ethics, philosophy and practice of meditation.
The book one must read to learn natural sciences is the book of nature. The book from which to learn religion is your own mind and heart.
-Swami Vivekananda