Former President Barack Obama and former Vice President Joe Biden, whose iconic friendship spawned an internet sensation, laugh together in the White House, Washington, D.C., Jan. 12, 2017. Getty

Amnesty International, a human rights organization, designates a week each year to celebrate friendships and the positive impact they have worldwide. This year, Friendship Week begins Monday and lasts through Friday. The theme of Friendship Week 2017 is belonging, an effort to raise awareness about finding a place for everyone.

Created by teachers around the world, the week is intended to teach young students how to reach out to each other instead of bullying. These 12 quotes celebrate good friends during Friendship Week and throughout the year.

  1. “Love is the only force capable of transforming an enemy into a friend,” Martin Luther King Jr.
  2. “What is a friend? A single soul dwelling in two bodies,” Aristotle
  3. “Friendship is born the moment when one man says to another, ‘What! You too? I thought no one but myself,’” C.S. Lewis
  4. “Friends show their love in times of trouble, not in happiness,” Euripedes
  5. “The friend in my adversity I shall always cherish most. I can better trust those who helped to relieve the gloom of my dark hours than those who are so ready to enjoy with me the sunshine of my prosperity,” Ulysses S. Grant
    Former Vice President Joe Biden and former President Barack Obama, whose iconic friendship spawned an internet sensation, laugh during an event at the White House in Washington, D.C., Jan. 12, 2017. Getty
  6. “In the sweetness of friendship let there be laughter and sharing of pleasures. For in the dew of little things the heart finds its morning and is refreshed,” Khalil Gibran
  7. “There is nothing I would not do for those who are really my friends. I have no notion of loving people by halves, it is not my nature,” Jane Austen
  8. “The greatest gift of life is friendship, and I have received it,” Hubert H. Humphrey
  9. “Don’t walk behind me, I may not lead. Don’t walk in front of me, I may not follow. Just walk beside me and be my friend,” Albert Camus
  10. “Walking with a friend in the dark is better than walking alone in the light,” Helen Keller
  11. “Let there be no purpose in friendship save the deepening of the spirit,” Khalil Gibran
  12. “Each friend represents a world in us, a world possibly not born until they arrive, and it is only by this meeting that a new world is born,” Anais Nin