There is no attachment stronger, more unselfish, than the love between brother and sister, thrown on the world orphans at an early age, with none to love them save each other. They feel how much they stand alone, and this draws them more together. Constant intercourse has given that perfect understanding which only familiarity can do; hopes, interests, sorrows, are alike in common. Each is to either a source of pride; it is the tenderness of love without its fears, and the confidence of marriage, without its graver and more anxious character. The fresh impulses of youth are all warm about the heart.