The senses, the memory, and the imagination must be guarded, not only against things which are a direct temptation to sin, but against everything which may engage the mind in passing interests when it should be bent upon the unseen realities. Ths intellect too must be called off from all vain curiosity, from all learning or enquiry pursued merely for its own sake. Instead, we must teach ourselves to see God in all things and all things in God.
H. A. Hodges, commenting on Nicolas Scupoli's Unseen Warfare, as edited by Nicodemus of the Holy Mountain and revised by Theophan the Recluse. (There are almost more words in that title than words in the quote.)