On Marriage, by Elder Emilian of Simonopetritis

“When you are about to choose the person of your life, make sure that he's not an uncommunicative type—in which case he'll have no friends. And if today he has no friends, tomorrow he'll find it difficult to have you as a friend and partner. Be on your guard against grumblers, moaners, and gloomy people who are like dejected birds. Be on your guard against those who complain all the time: "You don't love me, you don't understand me", and all that sort of thing. Something about these creatures of God isn't right. Also be on your guard against religious fanatics and the overly pious. Those, that is, who get upset over trivial things, who are critical of everything and hypersensitive. How are you going to live with such a person? It will be like sitting on thorns. Also look out for those who regard marriage as something bad, as a form of imprisonment. Those who say: But I've never in my whole life thought about getting married.

Watch out for certain pseudo-Christians, who see marriage as something sordid, as a sin, who immediately cast their eyes down when they hear anything said about it. If you marry someone like this, he will be a thorn in your flesh, and a burden for his monastery if he becomes a monk. Watch out for those who think that they're perfect, and find no defect in themselves, while constantly finding faults in others. Watch out for those who think they've been chosen by God to correct everyone else.

There is another serious matter to which you should also pay attention: heredity. Get to know well the father, the mother, the grandfather, the grandmother, the uncle. Also, the basic material prerequisites should be there. Above all, pay attention to the person's faith. Does he or she have faith? Has the person whom you're thinking of making the companion of your life have ideals? If Christ means nothing to him, how are you going to be able to enter his heart? If he has not been able to value Christ, do you think he will value you? Holy Scripture says to the husband that the wife should be "of your testament" (Mal 2.14), that is, of your faith, your religion, so that she can join you to God.”