Duboc had only sensual love in mind when he said: To be adored and admired is, in distinction from friendship, the criterion of love, while the criterion of friendship, in distinction from love, is to be understood and esteemed; the latter is delighted in its illusions, the former harbors an element inimical to all illusions. Sentimental love is also an enemy to illusions. Sentimental love, as distinguished from friendship, is dependent upon sexual differentiation. Pure oxygen would burn the lungs after a very short time, pure nitrogen suffocates every animal, but “both combined maintain life,” says Ellen Key. Mere sensual attraction is not love, nor is friendship love; in combination they are the air of life. When two souls have joys which the senses share, and when the senses have delights which the souls ennoble, then the result is neither desire nor friendship, it is a new feeling. The only distinction between true love and pure friendship is that the most ideal relation between man and man in friendship is transferred to man and woman in love. Hence these two relationships must possess the same qualities. Paternal, filial and fraternal love partake each, in some degree, of instinct and are, to that extent, impulsive and blind. But in true love, instinct and sensuality have no place. “She is sacred to me,” says Goethe’s Werther, “all desire is silent in her presence.” A gleam of such wedded friendship transcends all other kinds of love. Wherever there is a pure and unselfish love for another for that other’s own sake, a love contingent neither on its return nor on its recognition, there is true friendship. Sentimental love, like its comrade friendship, furthers the display of nobility and native virtues of the human soul. To love one’s soul for its beauty, grace and truth, to be inspired by the charm of its character to an affection which is pure and chaste, is to open the way to appreciate all beautiful and true and gracious souls. It offers the most refined of the pleasures which make life worth living. Joy demands that its joy should be shared.[AI] We need sympathy; hence we crave friendship and love. By the devotion of the other we feel our own power, our own value enhanced. Love tends to make man kinder and better through his complete identification with the existence of another. In the beauty of a loving attachment, man learns to comprehend all his fellowmen and to value and look at all the world by the glorious light of an inner community of emotions.