Clearly this is 'looking slantwise' again. But Graves is not an occultist in any shape or form, nor even a mystic. He is concerned with logic and facts, both of which he handles scrupulously. For example, a whole chapter is given to his analeptic self's recreation of a conversation that supposedly took place in AD 43, during which many historical riddles are solved. Previously, for obvious reasons, a child's maternity had been certain while its paternity had always been 'debatable and irrelevant'.
Graves writes primarily for poets.
This is less litist than it sounds. True, only highly trained, dedicated and gifted individuals can become poets. There is another problem with all this for today's reader. Graves affected a mildly irritating old-world gallantry which is completely out of place in modern times. Even so, he despised misogyny and approved women's economic equality provided it could be made to work.