Devarim 15:18

Verse 18. It shall not seem hard, however, to the internal man when these exterior principles are entirely removed from the soul; for they have performed their service for the spiritual man in conjoining to him interior things during the states of temptation-combat; and the Divine Love and Wisdom will be more closely united to the soul in its future progress. [Note (verses 12-18).—There is to be no waste in the kingdom of the Lord; nothing is to be despised because it is of less use than other things; but everything is to be judiciously used with care and prudence according to its usefulness.]