If the mind is total silence, it is muffled, if the mind is muffled the ego is absent, if the ego is absent there is unity with what one is, if there is unity with what one is, there is deep experience with what is real and essential. To meditate deeply is to continually practice the vow of abstention from evil and union with good; it is a constant process because evil or mental illusion reproduces itself, simultaneously both internally and externally. Evil is the mental self subjected to the triple illusion of hatred, selfishness and falsehood, associated with the ego's insatiable desire for power, money and sex. When this desire is cut off, the ego dissolves and does not interfere with the nature of the soul, thus free from the false self. The inattention of the mental self is taken advantage of by the reproduction of evil to enter internally and force its permanence. If you meditate for light, you make a double effort, on the one hand you turn off all light in your inner room, on the other hand you call upon a stranger to give you a light which is not your own or to enter your personal room to turn on for you the very light which you have previously decided to turn off.