Likutay Moharan - Volume 2 - Torah-teaching 114

The Essence of the Defect of Thought, Heaven Forbid

Once I spoke with him, of blessed memory, and I understood that he greatly desired to reveal to me something from the attainments he attained, as was his constant way. But it was difficult for him, and I walked with him together in silence, for he did not speak to me anything. But within this, these words came out from his holy mouth: Seh hat apanim az meh muz zich fun a hirhur zeiyer hitn [See, take care that one must greatly guard himself from a thought]. And I understood then from his holy language and from his holy movements when he spoke this, that then it was revealed to him in his awesome attainments the essence of the defect of thought, Heaven forbid, that it greatly, greatly damages, may the Merciful One save us. And it is impossible to depict this in writing.