What are some popular quotes about friendship?

Some popular quotes about friendship include "Friends are the siblings God never gave us," which was written by Mencius. Another is from Hubert H. Humphrey, who said, "The greatest gift of life is friendship." Helen Keller said, "Walking with a friend in the dark is better than walking alone in the light," according to BrainyQuote.

Another quote about friendship comes from Walter Winchell, who said, "A real friend is one who walks in when the rest of the world walks out." Khalil Gibran said, "Friendship is always a sweet responsibility, never an opportunity." Charles Caleb Colton said, "True friendship is like sound health; the value of it is seldom known until it is lost," states BrainyQuote.