 He describes extrovertive mysticism as an experience of unity within the world, whereas introvertive mysticism is "an experience of unity devoid of perceptual objects; it is literally an experience of 'no-thing-ness'".The unity in extrovertive mysticism is with the totality of objects of perception.While perception stays continuous, “unity shines through the same world”; the unity in introvertive mysticism is with a pure consciousness, devoid of objects of perception, “pure unitary consciousness, wherein awareness of the world and of multiplicity is completely obliterated.” According to Stace such experiences are nonsensical and nonintellectual, under a total “suppression of the whole empirical content.”
Stace finally argues that there is a set of seven common characteristics for each type of mystical experience, with many of them overlapping between the two types.