You are quite right. She [Madame Blavatsky] was an occultist, not a spiritual personality. What spiritual teaching she gave, seemed to be based on intellectual knowledge, not on realisation. Her attitude was Tibetan Buddhistic. She did not believe in God, but in Nirvana, miraculous powers and the Mahatmas.

page 483 , Letters on Yoga , volume 22 , SABCL