The cause of all things is neither soul nor intellect
 William James, The Varieties of Religious Experience (1902). copy citation

Context

“negating the negation which it seems to us to imply, in the interests of the higher affirmative attitude by which we are possessed. The fountain-head of Christian mysticism is Dionysius the Areopagite. He describes the absolute truth by negatives exclusively. “The cause of all things is neither soul nor intellect; nor has it imagination, opinion, or reason, or intelligence; nor is it reason or intelligence; nor is it spoken or thought. It is neither number, nor order, nor magnitude, nor littleness, nor equality, nor inequality, nor similarity, nor dissimilarity.” source