Aasan TR shares his understanding of Valmiki's Sutra Gnanam. Here the Siddhas guide us in differentiating and identifying the true Siddhas from the false. Agathiyar too has lashed out at false gurus in his Agathiyar Gnanam.
Aasan also speaks about the greatness of the written word that has the potential to bring a clear understanding of the text from within. Just as the idols invoke devotion from within, the written word too has the tendency and ability to invoke an understanding of the subject. Carl Sagan says it beautifully of the written word (book).