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

I know my older sister loves me because she gives me all her old clothes and has to go out and buy new ones. – Author unknown, attributed to a 4-year-old named Lauren