From this it can be understood that the name Ein Sof, blessed be He, which we use, is not at all a designation for the essence of the Essentially Existing One, may He be blessed and exalted, for how can we define, by means of a name or a word, anything that we cannot grasp? Since the imagination and the five senses can suggest nothing to us of an essence, even with respect to physical entities, how can thought or language relating to it be possible? This is even more the case with regard to the Essentially Existing One Himself.