The Enchiridion (Version 2) : 18

When a raven has croaked inauspiciously, let not the ap­pearance hurry you away with it; but straightaway make a distinction in your mind and say, None of these things is signified to me, but either to my poor body, or to my small property, or to my reputation, or to my children or to my wife: but to me all significations are auspicious if I choose. For whatever of these things results, it is in my power to derive benefit from it.