"Mme Blavatsky is a bit wild and somewhat irrational and speaks as if she were the Oracle of Delphi. But I will admit that I find some interesting observations in her book which was published as you know, back in 1888, at a time when physics and science were in their swaddling clothes... I'm astonished how much in keeping it is with modern Physics... There are many other significant statements of hers which I find interesting, but for which i have no time to discuss now."