" When the power of breath (Sa) is controlled it becomes rested (as) and in that
state it transforms into protector(tra); this is the basic principle of life and
consciousness, wherein the senses, mind, intelligence all are protected and
directed through the power of breath in a rested state, this is called Sa+as+
tra (SASTRA). It is the most powerful weapon alive and the most powerful
protector as well. One who stills, directs, controls and allows it to rise from
the core of the body to the subtle, subtler, subtlest levels of consciousness is
considered to be well versed in Sastras. Ananth Yoga allows one to work on
the Grossest, Gross, Subtle, Subtler levels of consciousness, through the
breath power leading on to connect to the subtlest level of consciousness. "

― Maitreya Rudrabhayananda