The solitary globe of night
pours out its calm and clear light
in the midst of the silence and
contemplation of nature.
As your prayer and meditation become deeper, they will defend you from the perpetual assaults of the outer world. You will hear the busy hum of that world as a distant exterior melody, and know yourself to be in some way withdrawn from it. You have set a ring of silence between you and it; and behold! within the silence you are free.
~ from PRACTICAL MYSTICISM by Evelyn Underhill