Likutei Moharan 156:2/ליקוטי מוהר"ן קנ״ו:ב׳

12. Now, the way to come to inspiration and warmth for God is through motion. This is because motion gives rise to warmth. As we see empirically, if one shoots an arrow which has wax affixed to its head, the wax then melts because of the warmth that results from the motion. Likewise, when a person walks to and fro, <he creates warmth in the heart> through his motion. {And the essence of motion is from the power of thought. For at first, the power of thought is at rest and still. After that, the power of thought begins to move from one thought to the next. That is, at first, when he sat in his place, his thought was to sit. But after that, when he wants to go, his thought begins to move from the first thought to thinking about going. As a result, he draws down warmth. This is why when a person sleeps, he has to cover himself; because when the power of thought is at rest and still, he has no warmth.}

2The same holds true for spiritual matters. When the power of thought thinks about the greatness of the Creator and His holy Torah, and moves from one thought to the next, through the motion he draws down warmth and his heart is aflame for God.

3Similarly, the primary warmth of the element of fire is that which it receives from the motion of the stars. This is because the element of fire is above the element of air, and close to the celestial spheres. So, too, each celestial sphere receives <warmth> from the celestial sphere above it.

4Therefore, by turning the many to righteousness, i.e., bringing people closer to the service of God, or by judging all men favorably, which is also called turning the many to righteousness—through this he also draws down warmth and inspiration for God. As it is written (Daniel 12:3), “… and those who turn the many to righteousness like the stars.”

5He receives the warmth from that which is above him, and can also draw down warmth to another. This is like the stars, which receive from above and transmit to below. But someone who does not receive the warmth from one who is above, even if he does bring warmth to another, it is only temporary. Moreover, he himself grows cold. This is like the white-hot iron that is cast into water: the iron itself gets cold, and even the heating of the water is temporary.

6{From “Now, the way to come to inspiration ” until here was not recorded in suitable order because I had not heard it directly from Rebbe Nachman’s holy lips, but from someone else in his name. For the essence of the matter, see the teaching “Atik is Hidden and Concealed,” Lesson #21. There, these insights are clarified at length. The general principle is this: The motion of the intellect creates heat in the heart. That is, as explained there, by meriting to comprehension of the holy knowledge through sanctifying the “seven candles”… consequently, one merits to inspiration of the heart for God, as it is written there. Study there.

7And through inspiration of the heart one merits to dispel the spirit of unholiness, the spirit of folly, as above. As a result, a person purifies his heart. Then, each time he has private conversation with God, he merits to speak new words, which are literally an aspect of holy spirit, as above.}