Children of the same family, the same blood, with the same first associations and habits, have some means of enjoyment in their power, which no subsequent connections can supply… – Jane Austen, Mansfield Park, 1814

A sister is a forever friend. – Author Unknown

Sibling relationships — and 80 percent of Americans have at least one — outlast marriages, survive the death of parents, resurface after quarrels that would sink any friendship. They flourish in a thousand incarnations of closeness and distance, warmth, loyalty and distrust. – Erica E. Goode, “The Secret World of Siblings,” U.S. News & Worl