The soul must be…

Jesus went into the temple and boldly drove out those that bought and sold. And when all was cleared, there was nobody left but Jesus. Observe this, for it is the same with us: when he is alone he is able to speak in the temple of the soul. If anyone else is speaking in the temple of your soul, Jesus will keep still, as if he were not at home. And he is not at home wherever there are strange guests-guests with whom the soul holds conversation, guests who are seeking to bargain. If Jesus is to speak and be heard, the soul must be alone and quiet.
–Meister Eckhart (1260-1328)

Contemplative life…

The pursuit of the contemplative life is something for which a great and sustained effort on the part of the powers of the soul is required, an effort to rise from earthly to heavenly things, an effort to keep one’s attention fixed on spiritual things, an effort to pass beyond and above the sphere of things visible to the eyes of flesh, an effort finally to hem oneself in, so to speak, in order to gain access to spaces that are broad and open. There are times indeed when one succeeds, overcoming the opposing obscurity of one’s blindness and catching at least a glimpse, be it ever so fleeting and superficial, of boundless light.
–Saint Gregory the Great (c. 540-604)