In plain words
The reason: Ānanda is a natural quality. In these times we are building up a kind of education that makes us forget our natural Ānanda. We are not cultivating the power to inquire inwardly into the principle of the Ātma, which is Ānanda. We must turn our vision inward and give the power of inquiry its due chance. What is all of today's education like? All the time we have, we spend only on reading books. Reading these, and reading again, it all turns to confusion. Truly, education must be taught through listening alone. Education must not be taught through books. Students who learn through books have less concentration. ‘We can go home and look at the text book, can't we?’ So the students listen to what the teacher says rather carelessly. Because there are Texts and notes, students misuse their power of concentration. In ancient times there were none of these Printed books and notes. Guru and disciples sat face to face and learned. And the disciples were only 5 or 6. The disciples took in what the guru said with one-pointed attention, so that it went home to their hearts. Because the disciples were few, the guru could see which disciple was listening and who was not; those who learned from books were just one or two. Most learned by listening alone. That is why, of the nine paths of Bhakti, listening was given the first place. In this kind of teaching, the guru too must know by heart what he is going to say. This is an education passed from heart to heart.
God dwells in us, unmanifest. Sādhana is needed to make this unmanifest manifest. As long as the matchstick is in its box, the fire in it stays unmanifest. When it is taken out and struck, a flame comes. That is, by the act of striking we have made manifest the fire that lay unmanifest in the stick. In just the same way, the fire called Jñāna lies unmanifest within us. To make it manifest, we must try to bring it out through sādhanas such as japa, dhyāna and bhajan. In the world, whatever thing we desire, there is a Prema for it. Only when there is Prema do we desire it. Besides that Prema, we must also have faith in its worth. Merely having these two does not bring the thing into our hands. We must do the karma that gains that thing. The method and procedure followed to gain it is the path of karma. Loving it is the path of Bhakti. Believing in it is the path of Jñāna. So whenever we want to gain anything, the paths of karma, Bhakti and Jñāna are blended in it. There are many who cannot bear Bhakti. Truly, we may say that such people are fools who do not know what Bhakti is. What is Bhakti? Prema. I want food. I love food. That is Bhakti for food. The belief that hunger will not go unless one eats is Jñāna.