The book is based on the Lectures delivered by the author under the auspices of Sri Venkateswara University, Tirupati, in 1980. Ancient Indians laid the foundations of mathematical and scientific knowledge. They measured both time and space and mapped out the heavens. They analysed the constitution of matter and understood the nature of the spirit. They conceived and developed the sciences of logic and grammar and made great advances in fields so divergent as anatomy and astronomy, medicine and metaphysics. There is no doubt that a part of the knowledge of, our old sages was derived by the process of intuition. The book gives a glimpse into the science and technique of spiritual growth. The reader will not fail to be impressed that the writer writes from conviction, and not from scholarship, not like the spoon that serves the soup not knowing its taste itself! The book has been published as an article in Bhavans Journal, an English fortnightly, devoted to life, literature and culture and has been well received by the readers.