dissipation of mind

There is the love of knowing without the love of learning;-the beclouding here leads to dissipation of mind.

Now our (empiric) diagnosis is that it is the dissipation of mind that is chiefly responsible for its untruthfulness.

It includes aridities, dissipation of mind, weariness, and disgust in the exercises of piety; and it is often experienced by beginners in the practice of mental prayer.