Spiritual knowledge is a regular science. Just as two and two make four, similarly everything is clean and obvious here also and there is no scope for any kind of modification or change in that.
This book discusses all forms, aspects and techniques of prayer. It is interspersed with quotes from scriptures of all religions.
First edition 1959
To read the complete book, please download the PDF "Prayer: Its nature and technique" from Sant Kirpal Singh.