"Thou shalt not make to thee other gods" includes not loving self and the world above all things; for that which one loves above all things is his god. There are two directly opposite loves, love of self and love to God, also love of the world and love of heaven. He who loves himself loves his own (proprium); and as a man's own (proprium) is nothing but evil he also loves evil in its whole complex; and he who loves evil hates good, and thus hates God. He who loves himself above all things sinks his affections and thoughts in the body, and thus in his own (proprium), and from this he cannot be raised up by the Lord; and when one is sunk in the body and in his own (proprium) he is in corporeal ideas and in pleasures that pertain solely to the body, and thus in thick darkness in respect to higher things; while he who is raised up by the Lord is in light. He who is not in the light of heaven but in thick darkness, since he sees nothing of God, denies God and acknowledges as god either nature or some man, or some idol, and even aspires to be himself worshipped as a god. From this it follows that he who loves self above all things worships other gods. The same is true, but in a less degree, of one who loves the world; for there cannot be so great a love of the world as of one's own (proprium); therefore the world is loved because of one's own and for the sake of one's own, because it is serviceable to it. Love of self means especially the love of ruling over others from a mere delight in ruling and for the sake of eminence, and not from a delight in uses and for the sake of public good; while love of the world means especially a love of possessing goods in the world from a mere delight in possession and for the sake of riches, and not from a delight in uses from these and for the sake of the consequent good. These loves are both of them without limit, and rush on, so far as scope is given, to infinity. (A.E., n. 950.) It is not believed in the world that the love of ruling from a mere delight in ruling, and the love of possessing goods from a mere delight in possession, and not from delight in uses, conceal in themselves all evils, and also a contempt for and rejection of all things pertaining to heaven and the church; and for the reason that man is stirred up by the love of self and love of the world to right doing in respect to the church, to the country, to society, and to the neighbor, by making good deeds honorable and looking for reward. Therefore this love is called by many the fire of life, and the incitement to great things.