Christ … made the blood of the specialists and leading spirits, the representatives of the people boil with his battle-cry: "I", "I", "I"! and provok… - Constantin Brunner

In mysticism, everything is thrown at us directly, without discursiveness and ratiocination, as if it were a matter of course, and we are challenged to follow an unrestrainable will to love, arising out of a tremendously agitated, indiscriminate feeling. … Mystics will—rather than know—their thoughts. … Mysticism witnesses nothing but love; mysticism is nothing but love. … Art shows how it loves, philosophy what it loves; mysticism knows only that it loves.

In point of fact there are two kinds sorts of mysticism, differing from one another as the ranting of drunkards from the language of illumined spirits. There is the muddled, stammering mysticism, and there is the mysticism luminous with truly ultimate ideas. On the one hand there are the empty dimness and darkness, the barren, chilling sentimentalism and mental debauchery, the foolishly grimacing but rigid phantasms of the Cabbala, of occultism, mysteriosophy and theosophy. We cannot draw too sharp a dividing line between these and the brightness, the simple sincerity, and healthy, rejuvenating strength of genuine mysticism, which takes the most precious gems from philosophy's treasure chest and displays them in the beauty of its own setting. Mysticism is in complete accord with the result, with the sum of philosophy. In fact, mysticism is precisely the sum and the soul of philosophy, in the form of that rapturous, passionate outpouring of love.... We are concerned with an understanding of this serious mysticism, and its meaning could be stated in three words... godlessness... freedom from the world... blessedness of soul.

Great, strong, spiritual love — which is always at the same time a genuine, unsentimental love of man — cannot be without wrath. … Anger can no more be separated from love than flame and heat can from fire. Love and anger are a single fire of the Spirit.