Teaching the truth

Truth can be taught only to that person who reach the master and say- master am afraid, this samsara is like serpent plz help me to cross over this ocean of serpent..and to that person the master teach us the spiritual wisdom, its that much secret. how can it be teach to all who have the ambition to become a great person in the world? this ancient teaching is only for a microscopic minority who understand there is no GREATNESS IN WORLD. so never it can be reached, if they teach then it does have the standard only of syllabus, coz it should be taught by guru not a master or pundit who gives a lecture after preparing the notes from home.. the teaching of rishis is mantras coz its experience in truth..how can teacher have that? and where is the disciple to understand it?