the Author strongly feels the still immeasurable gapexisting between the todays comprehensible neurophysiologyconcerning somatic and autonomic functions, on the one hand,and the still incomprehensible properties of mind - whenapproached in the same neurophysiological term- on the otherhand. For this reason, the book is first aiming at given anunderstandable, critically viewed, fundament on the"kernel" of mind:the ideas, their relationship with thecorresponding concepts, with the development of thought ,with memory, with will.In this book, the Author does not advance neurophysioligalmodels to put to test, rather, strives to encase theforementioned mind's functional properties and its abstractstructures within the same reference framework of physicalprinciples outlined for the somatic and autonomic functionsin his preceding volume PRINCIPLES OF THEORETICALNEUROPHYSIOLOGY (Springer, 1987.)