Mysticism is not a philosophy. It is a personal, individual experience of a Reality beyond human consciousness, logic, reason or intuition.
This is why those who have experienced it have such an ineradicable conviction of the phenomenon’s existence.
They have experienced a powerfully non biological, creative, joy of giving, knowledge, a oneness of all embracing existence of everything, even matter, that is completely beyond mankind, on a level beyond all human consciousness, measurement or interference.
Philosophy on the other hand is all supposition, mind stuff like logic and reason for instance; ideological like socialism, communism or religions, none of which even have successful human experiences to support their mythomania.
All Is Well.