Mastery means the knowledge of’ how to deal with certain vibrations ; if you have the knowledge of handling these vibrations, you have the mastery. And the best field of experimentation is yourself. You have this mastery first of all in yourself, and having it in yourself you can transmit its vibration into others or create this vibration in them to the extent you are able to identify yourself with them. But if you are not able to handle this vibration in yourself, how can you handle it in others ? You can, through a word, through an influence, encourage them to do what is necessary in order to learn self-mastery, but you cannot master them directly.
To master something, a movement, is simply, by your presence, without a word or explanation, to replace the wrong vibration by the right vibration. It is this which constitutes the power of mastery; not speaking or explaining. With the word and the explanation, and even with a certain emanation of force, you can have an influence over someone, but you cannot master the movement. The mastery over the movement means the capacity to set against the vibration of this movement, a vibration that is stronger and more true and that can put a stop to the other vibration.
I will give you a very easy example. Two persons are quarrelling before you. Not only are they quarrelling but they are about to come to blows. You explain to them that it is not a thing to be done, you give them good reasons so that they may stop and they do stop. You would have had an influence upon them. But if simply you stand before them, you look at them and put forward a vibration of peace, calm, tranquillity without uttering a single word, without any explanation, the other vibration can exist no more, it falls by itself. That is mastery.
It is the same thing for the cure of ignorance. If you need words to explain something, it is not the true knowledge. If I have to utter all that I utter in order to make you understand me, it is not mastery, it is simply an influence that I am able to exercise upon your intelligence and help you to understand, awaken in you the desire to know, to discipline yourself etc. But if I am not able by simply looking at you, without saying a word, to put into you the light that will make you understand, then I would not have mastered the state of ignorance. You understand ? (The questioner makes a sign of yes). Good.
CWM, Vol 8 pg 351.