Spirituality does not depend upon the reading of Scriptures, or upon learned interpretations of Sacred Books, or upon fine theological discussions, but upon the realization of unchangeable Truth. In India a man is called truly spiritual or religious not because he has written some book, not because he possesses the gift of oratory and can preach eloquent sermons, but because he expresses divine powers through his words and deeds. A thoroughly illiterate man can attain to the highest state of spiritual perfection without going to any school or university, and without reading any Scripture, if he can conquer his animal nature by realizing his true Self and its relation to the universal Spirit; or, in other words, if he can attain to the knowledge of that Truth which dwells within him, and which is the same as the Infinite Source of existence, intelligence, and bliss. He who has mastered all the Scriptures, philosophies, and sciences, may be regarded by society as an intellectual giant; yet he cannot be equal to that unlettered man who, having realized the eternal Truth, has become one with it, who sees God everywhere, and who lives on this earth as an embodiment of Divinity. The writer had the good fortune to be acquainted with such a divine man in India. His name was Râmakrishna. He never went to any school, neither had he read any of the Scriptures, philosophies, or scientific treatises of the world, yet he had reached perfection by realizing God through the practice of Yoga. These powers begin to manifest in the soul that is awakened to the ultimate Reality of the universe. It is then that the sixth sense of direct perception of higher truths develops and frees it from dependence upon the sense powers. This sixth sense or spiritual eye is latent in each individual, but it opens in a few only among millions, and they are known as Yogis. With the vast majority it is in a rudimentary state, covered by a thick veil. When, however, through the practice of Yoga it unfolds in a man, he becomes conscious of the higher invisible realms and of everything that exists on the soul plane. Whatever he says harmonizes with the sayings and writings of all the great Seers of Truth of every age and clime. He does not study books; he has no need to do so, for he knows all that the human intellect can conceive. He can grasp the purport of a book without reading its text; he also understands how much the human mind can express through words, and he is familiar with that which is beyond thoughts and which consequently can never be expressed by words.