CUSTODY OF THE SENSES
In Christian asceticism the practice of controlling the use of the senses, especially the eyes, in order to foster union with God and preserve oneself in virtue. It is founded on the premise that "nothings is in the mind that was not first in the senses." Sense experience inevitably produces thoughts in the mind; thoughts become desires; and desires lead to actions. Morally good actions, therefore, ultimately depend on a judicious guard of sensations.