Our greatest need is to be silent before this great God with the appetite and with the tongue, for the only language he hears is the silent language … - John of the Cross

There is another reason also why the soul has traveled safely in this obscurity; it has suffered: for the way of suffering is safer, and also more profitable, than that of rejoicing and of action. In suffering God gives strength, but in action and in joy the soul does but show its own weakness and imperfections. And in suffering, the soul practices and acquires virtue, and becomes pure, wiser, and more cautious.

Seek in reading and you will find in meditation; knock in prayer and it will be opened to you in contemplation.

Hence, for the soul to be in its center - which is God, as we have said - it is sufficient for it to possess one degree of love, for by one degree alone it is united with him through grace. Should it have two degrees, it becomes united and concentrated in God in another, deeper center. Should it reach three, it centers itself in a third. But once it has attained the final degree, God's love has arrived at wounding the soul in its ultimate and deepest center, which is to illuminate and transform it in its whole being, power, and strength, and according to its capacity, until it appears to be God. When light shines on a clean and pure crystal, we find that the more intense the degree of light, the more light the crystal has concentrated within it and the brighter it becomes; it can become so brilliant from the abundance of light received that it seems to be all light. And then the crystal is undistinguishable from the light, since it is illumined according to its full capacity, which is to appear to be light.