In his actual physical existence, this being is limited by space and time and by the shackles of the senses; however deep he may look into himself, he finds himself damaged and spotted, and sees nowhere the image of speckless purity for which he seeks. And yet there is nothing he covets so much as to realise his own ideal, to find his real higher self. And as he cannot find this true self within himself, he has to seek it without himself. He projects his ideal of an absolutely worthy existence, the ideal that he is unable to isolate within himself, upon another human being, and this act, and this alone, is none other than love and the significance of love. Only a person who has done wrong and is conscious of it can love, and so a child can never love. It is only because love represents the highest, most unattainable goal of all longing, because it cannot be realised in experience but must remain an idea; only because it is localised on some other human being, and yet remains at a distance, so that the ideal never attains its realisation; only because of such conditions can love be associated with the awakening of the desire for purification, with the reaching after a goal that is purely spiritual, and so cannot be blemished by physical union with the beloved person; only thus, is love the highest and strongest effort of the will towards the supreme good; only thus does it bring the true being of man to a state between body and spirit, between the senses and the moral nature, between God and the beasts. A human being only finds himself when, in this fashion, he loves. And thus it comes about that only when they love do many men realise the existence of their own personality and of the personality of another, that “I” and “thou” become for them more than grammatical expressions. And so also comes about the great part played in their love story by the names of the two lovers. There is no doubt but that it is through love that many men first come to know of their own real nature, and to be convinced that they possess a soul. It is this which makes a lover desire to keep his beloved at a distance--on no account to injure her purity by contact with him--in order to assure himself of her and of his own existence. Many an inflexible empiricist, coming under the influence of love, becomes an enthusiastic mystic; the most striking example being Auguste Comte, the founder of positivism, whose whole theories were revolutionised by his feelings for Clotilde de Vaux. It is not only for the artist, but for the whole of mankind that _Amo, ergo sum_ holds good psychologically.