“It is necessary to restrain the bull in us in order to elevate it to the Bull. This means to say that the instinctive desire which shows itself as rage concentrated upon a single thing, and which blinds one to everything else, is to be restrained and thus elevated to the propensity for profound meditation. This entire operation is summarized in Hermeticism by the words "to be silent". The precept "to be silent" is not, as many authors interpret it, solely a rule of prudence, but it is moreover a practical method of transforming this narrowing and blinkering instinct into a propensity towards depth and, correspondingly, an aversion towards all that is superficial in nature.
The winged Bull is therefore the result obtained by the procedure of "being silent". This means to say that the Bull is elevated to the level of the Eagle and united with it. A marriage of the impetus towards the heights and the propensity towards depth is effected by this union. The marriage of opposites - this traditional theme of alchemy - is the essence of the practice of the law of the Cross.”