Karma is the law of causation,universal and complex, yet extremely important to understand. The science of karma teaches that each person's future is in his or her own hands in proportion to the knowledge acquired about this law. Like every natural law, it is not a command, but a statement of invariable sequence, not only in the physical, but in the subtle worlds of consciousness.

Knowledge about karma liberates the mind of its anxiety, fear and futile desires. Annie Besant provides in this book, simply and clearly written, basic knowledge both of principles and practice, to set the reader well on the way to happiness.