Shaw knows at any moment, on any subject, what he thinks, what you will think, what others have thought, what all this thinking entails; and he takes the most elaborate pains to bring these thoughts to light in a form which is by turns abstract and familiar, conciliatory and aggressive, obvious and inferential, comic and puzzling. In a word, Shaw is perhaps the most consciously conscious mind that has ever thought — certainly the most conscious since Rousseau; which may be why both of them often create the same impression of insincerity amounting to charlatanism.
Yet it is by excess of honesty that Shaw himself lent color to his representation as an inconsequential buffoon bent on monopolizing the spotlight.
II - Bernard Shaw in Twilight (1943)