He who combines the practice of the virtues with spiritual knowledge is a man of power. For with the first he withers his desire and tames his incensiveness, and with the second he gives wings to his intellect and goes out of himself to God. (Maximos the Confessor)

I needed to check the definitions of wither and incensive. Maximos means to prune our desire and tame our tendency for excitement or being inflamed.

Another definition - enthusiasm - derived from LL enthūsiasmus and Greek enthousiasmós, equiv. to enthousí(a) possession by a god (énthous, var. of éntheos having a god within, equiv. to en- en- 2 + -thous, -theos god-possessing + -ia y3 ) + -asmos, var., after vowel stems, of -ismos -ism

The best pruning and taming increases our awareness of entheos, God within.