Faith is the opposite of love. It was faith, not love, not reason, which invented Hell. To love, Hell is a horror; to reason, an absurdity. Hell sweetens the joys of happy believers.
God is love. This is the sublimest dictum of Christianity. But the contradiction of faith and love is contained in the very proposition. Love is only a predicate, God the subject. What, then, is this subject in distinction from love? The necessity of the distinction would be done away with only if it were said conversely: Love is God, love is the absolute being. Thus love would take the position of the substance. But love does not alone fill my soul: I leave a place open for my uncharitableness by thinking of God as a subject in distinction from the predicate.
Necessarily; for in Christianity love is tainted by faith, it is not free, it is not apprehended truly. A love which is limited by faith is an untrue love. Love knows no law but itself; it is divine through itself; it needs not the sanction of faith; it is its own basis. The love which is bound by faith is a narrow-hearted, false love, contradicting the idea of love, i.e., self-contradictory,— a love which has only a semblance of holiness, for it hides in itself the hatred.that belongs to faith; it is only benevolent so long as faith is not injured. Hence, in this contradiction with itself, in order to retain the semblance of love, it falls into the most diabolical sophisms, as we see in Augustine’s apology for the persecution of heretics. Love is limited by faith; hence it does not regard even the uncharitable actions which faith suggests as in contradiction with itself; it interprets the deeds of hatred which are committed for the sake of faith as deeds of love.
The Bible curses through faith, blesses through love. But the only love it knows is a love founded on faith. Thus here already it is a love which curses, an unreliable love, a love which gives me no guarantee that it will not turn into hatred; for if I do not acknowledge the articles of faith, I am out of the sphere of love, a child of hell, an object of anathema, of the anger of God, to whom the existence of unbelievers is a vexation, a thorn in the eye. Christian love has not overcome hell, because it has not overcome faith. Love is in itself unbelieving, faith unloving. And love is unbelieving because it knows nothing more divine than itself, because it believes only in itself as absolute truth.
Christian love is already signalised as a particular, limited love, by the very epithet, Christian. But love is in its nature universal. So long as Christian love does not renounce its qualification of Christian, does not make love, simply, its highest law, so long is it a love which is injurious to the sense of truth, for the very office of love is to abolish the distinction between Christianity and so-called heathenism;— so long is it a love which by its particularity is in contradiction with the nature of love, an abnormal, loveless love, which has therefore long been justly an object of sarcasm. True love is sufficient to itself; it needs no special title, no authority.
Ludwig Feuerbach – The Essence of Christianity