In plain words
Only in such a seat of the Ātma, wherever there is the oneness of the three, thought, word and our deed, there Śānti will surely be found. Not otherwise: when one thing is in the mind, another in the word, and yet another is practised in the deed, he himself breeds unrest for himself. So, since this is the right age, this age of ours, to bring each and every wish that comes from the sacred seat of the Ātma out through the word called Satya and to dedicate it in the act called the doing of karma, I trust that this very day you will make the proper progress to earn the name ‘man’ in its true meaning. Because the powerful traits called kāma, krodha, dveṣa and the like press it down, the principle of morality and honesty lies crushed and subdued in man's heart. To the extent that these traits called kāma, krodha and dveṣa wane in our hearts, then and only then does the radiance of this morality and honesty grow day by day. A small example. When we want a light, there must be three things: a lamp, oil and a wick. When these three come together, the light of Jñāna, which is the Lord's gracious glance, goes on shining. Here Vairāgya itself is the lamp. Bhakti itself is the oil. And karma itself is the wick. By bringing these three together we receive the light called Jñāna. When these three are lacking, the Paramātma who lights it is not there. Even with these three present, if there is no one to light it, these three go to waste.
There are lamp, oil and wick: will the lamp's light arise? There are flowers, needle and thread: will a garland make itself? There are gold and gems: will jewels be fashioned? There is intellect, there is learning: without a guru, will one become a jñāni?
Forget the Nature of the Jīva and Make Divinity Your Aim
You have plenty of intelligence. They have written ‘A’ on the Black board. If there is no guru to tell you that that form is to be read ‘A’, what use is all your intelligence!