The mystical techniques for achieving immortality are revealed only to those who have dissolved all ties to the gross worldly realm of duality, conflict, and dogma. As long as your shallow worldly ambitions exist, the door will not open.
. . . the mind is desperate to fix the river {of events} in place: Possessed by ideas of the past, preoccupied with images of the future, it overlooks the plain truth of the moment.
The whole world says that my Way is great like nothing else. It is great because it is like nothing else. If it were like everything else, it would long ago have become insignificant.