Destructive Influences

Everything that a person looks at, the image penetrates and fixes itself in the mind, and when he comes to pray or to study Torah, those material images appear in the mind, and they damage and invalidate his thoughts, and he will not be able to concentrate as required, because the eyes only see through the power that resides in the soul and the soul receives those images that come through the eyes and if the person looks at nakedness, he causes nakedness to penetrate in a high place.

(Reishis Chochma)