What is the use of merely reading sacred works without shedding ‘I’ ness and 'My' ness

What is the use of merely reading sacred works without shedding ‘I’ ness and 'My' ness and without keeping the mind pure and spotless and passions under complete check ? A true devotee should have no Mamata—attachment—but should have Samata —equal vision—towards all beings.
http://www.babasaiofshirdi.org/