Very solid and well referenced, using theosophists' own words, correspondance, books and articles, leaving no room to deny the facts.
"In this study we have wished above all to provide a source of information and to gather for this purpose documentation whose elements up to now have been scattered everywhere; some of it has even been quite difficult of access for all who have not been favored in their research by rather exceptional circumstances. As to the doctrines themselves, if we have not thought it useful to dwell on them longer than we have in fact done because of their only too evident inconsistency, and if here too we have above all given citations, this is because we think, in agreement with another adversary of theirs, that ‘the surest method of refuting [these doctrines] is to state them briefly by letting the masters themselves speak’; (La Nouvelle Théosophie, by the Rev. de Grandmaison, P54.)
"‘Our goal,’ as Mme Blavatsky used to say, ‘is not to restore Hinduism, but to sweep Christianity from the surface of the earth .’" - Declaration made by Alfred Alexander and published in The Medium and Daybreak, London, January 1893, P23.
Very "theosophic" indeed.
"A Theosophist has expressly declared that The Secret Doctrine would not have been published if the theory of evolution had not come to light in the human brain - Les Cycles, by Amaravella, in Lotus Bleu, April 27, 1894, p78); we would say, rather, that without it, it would not have been imagined."
At the seventeenth convention of the Theosophical Society, held at Adyar in December 1891, Colonel Olcott said the following: ‘I helped HPB in the compilation of her Isis Unveiled, while Keightley, with several others, did the same for the Secret Doctrine. Each of us knows full well how far from infallible are parts of these books, owing due to our collaboration, not to mention those parts written by HPB.
Highly recommended if the subject interests you.