Also you said-“These are man’s beginnings. He rises by the descent of ever higher types of Manu from the Bhuvarloka,—first he is Pashu, then Pishacha, then Pramatha, then Rakshasa, then Asura, then Deva, then Siddha. So he ascends the ladder of his own being towards the Sat Purusha.’ Are these the 7 levels through which the soul evolves? Does everyone has to ascend through this ladder one by one or there can be a leap possible🤔? Please elaborate.

This ascension through successive lives from one grade to another was the idea behind Chaturvarnya, the fourfold soul types, soul involved in Matter (Shudra), soul involved in the circulation of vital forces and energies (Vaishya), soul involved in vital ambition, power, strength (Kshatriya) and soul involved in mind and pursuit of true knowledge (Brahmin). Later this deep knowledge was lost and the system became something based on mechanical inheritance, hence the Time Spirit has broken its outer form. But the inner truth exists for anyone to see. 

Affectionately,

Alok Da