St. John Climacus.

I have seen aged priests mocked by the demons; and on the feasts, they gave their blessing to young men not under their direction to use wine and all the rest. If those who give permission have a good witness in the Lord, that is, are spiritual, then let us also permit ourselves within limits. But if they are negligent, let us not give a thought to their blessing, especially when we are in the actual heat of the struggle with our flesh. 

St. John Climacus