The meaning and worth of love, as a feeling, is that it really forces us, with all our being, to acknowledge for ANOTHER the same absolute central significance which, because of the power of our egoism, we are conscious of only in our own selves. Love is important not as one of our feelings, but as the transfer of all our interest in life from ourselves to another, as the shifting of the very centre of our personal life. This is characteristic of every kind of love, but predominantly of sexual love; it is distinguished from other kinds of love by greater intensity, by a more engrossing character, and by the possibility of a more complete overall reciprocity. Only this love can lead to the real and indissoluble union of two lives into one; only of it do the words of Holy Writ say: 'They shall be one flesh,' i.e., shall become one real being.
Vladimir Sergeyevich Solovyov, The Meaning of Love
egoism, feeling, love, sexual-love