St. Isaac the Syrian on Purity

Some time ago, Julio had posted some messages on resources for sexual purity. Along those lines, I wanted to add these quotations from St. Isaac the Syrian:

A chaste body is dearer to God than a pure offering. Both, however, prepare a dwelling-place for the Trinity in the soul....

Be not so cautious regarding the belly as regarding sight. Inner war is in any respect easier.

Do not believe, O Brother, that inner deliberations can be regulated without the regulation of the body...

Anterior to all thy deeds are chasteness of body and purity of heart. Without them every deed is vain before God.

— St. Isaac the Syrian. Mystic Writings. (Willits, CA: Eastern Orthodox Books, n.d.), pp. 70, 72.