Isaac of Nineveh – 7th century ascetic and mystic, born in modern-day Qatar, was made Bishop of Nineveh between 660-680. Here he speaks of the importance of silence in monastic life.
“Love silence above all things. It brings thee near the fruit which the tongue is too weak to interpret. At first we compel ourselves to be silent. Then from our silence something is born which draws us toward silence. May God grant thee to perceive that which is born of silence. If thou beginnest with this discipline, I do not know how much light will dawn in thee through it. Concerning what is said about the admirable Arsenius: that Fathers and brethren came to see him, but that he sat with them in silence and dismissed them in silence – do not think, my brother, that this happened by the action of his will alone, though in the beginning he had to compel himself. After some time some delight is born in the heart from the exercise of this service and by force it draws the body towards remaining in silence.”
“If thou placest all labors of this discipline [solitary life] on one side and silence on the other, silence will outweigh them.”
~St. Isaac of Nineveh, from Ascetical Treatises 65