My personal favourite of Little Essays Toward Truth is the essay on Silence, which in my view is one of the best things that Crowley wrote.
I also find very interesting Crowley's Commentary on Blavatsky's The Voice of the Silence, which he regarded as her masterwork. It's all about detecting and being attuned to the silent self, Harpocrates, Hoor-paar-kraat, which of course is connected with the Holy Guardian Angel, the bringing to men and women the Knowledge and Conversation of which he regarded as his particular work.
His drawing 'The Way', which he placed as the frontispiece to his Commentary on The Voice of the Silence, is in my view a glyph or articulation of this Voice, hence its placement.