First a couple of personal comments - when I report what PB has said, it is because I asked him, or because he offered an unsolicited comment - something He rarely did, and so I paid close attention to those moments. His remarks regarding the exalted state of Chandrasekharendra Saraswathi were of the latter type - PB just started talking about Him. I had the life-long blessing of visiting - and having a few conversations - with His Holiness in the last few years of His life (I also met with Jayandra). My meditations in the presence of Shankaracarya opened a remarkable glimpse of His Darshan. I have therefore to disagree - my experience is that Shankaracarya DID teach enlightenment by Silence - the greatest way of all.