Someone who has actually tasted truth is not contentious for truth. Someone who is considered by people to be zealous for truth has not yet learned what truth is really like; once he has truly learned it, he will cease from zealousness on its behalf.
Isaac of NinevehWhoever can weep over himself for one hour is greater than the one who is able to teach the whole world; whoever recognizes the depth of his own frailty is greater than the one who sees visions of angels.
Isaac of NinevehThe prayer of one who does not consider himself a sinner is not accepted by the Lord.
Isaac of NinevehWhy do you increase your bonds? Take hold of your life before your light grows dark and you seek help and do not find it. This life has been given to you for repentance; do not waste it in vain pursuits.
Isaac of Nineveh