There are people who keep complaining that nothing is ever manifested to them on their spiritual path--no forms, no ghosts, no colors, no voices, no word. But even if such a person had experienced manifestations of this kind they would have been no help to him; however, he is discouraged because he has not received any. The teacher he would like to have might easily lead him astray from the path, simply because he is aiming at things that do not matter, and a real teacher will not encourage him to seek such things.