Intellect is the Neshamah

Likutei Moharan (35:02-03) For the renewal of Creation is the renewal of wisdom, as in, “You created everything with wisdom.”This is because the renewal of the intellect is the renewal of the soul. For the intellect is the neshamah, as is written, “the neshamah from the Almighty gives them understanding.” As our Sages taught,: Just as G-d nourishes the world, so too, the soul nourishes its body. Thus it is the soul that gives vitality to the body, while it itself is the intellect, as is written, “Wisdom gives life to those who possess it.” 3. Now, renewal of the intellect—i.e., renewal of the soul—is by means of sleep, as is brought in the holy Zohar   “They are renewed every morning; abundant is Your faithfulness”. For when the intellect is overtaxed, then, as we see empirically, they are renewed by means of sleep. And while sleeping, the soul—enters into faith; this being the aspect of “They are renewed every morning; <abundant is Your faithfulness>,” as is brought in the holy Zohar.