Here are some book quotes about friendship.

Book Quotes About Friendship

1. “Friendship is born at that moment when one person says to another, ‘What! You too? I thought I was the only one!'”
— C.S. Lewis, “The Four Loves”

2. “A real friend is one who walks in when the rest of the world walks out.”
— Walter Winchell

3. “Friendship … is born at the moment when one man says to another ‘What! You too? I thought that no one but myself…'”
— C.S. Lewis, “The Screwtape Letters”

4. “Friendship is the only cement that will ever hold the world together.”
— Woodrow Wilson

5. “Friendship is the inexpressible comfort of feeling safe with a person, having neither to weigh thoughts nor measure words.”
— George Eliot, “Middlemarch”

6. “Friendship is unnecessary, like philosophy, like art… It has no survival value; rather it is one of those things which give value to survival.”
— C.S. Lewis, “The Four Loves”

7. “Friendship is delicate as a glass, once broken it can be fixed but there will always be cracks.”
— Waqar Ahmed

8. “A friend is someone who knows all about you and still loves you.”
— Elbert Hubbard

9. “A true friend is somebody who can make us feel better no matter how bad things may be.”
— Ralph Waldo Emerson

10. “Friendship marks a life even more deeply than love. Love risks degenerating into obsession, friendship is never anything but sharing.”
— Elie Wiesel

11. “Friendship is the shadow of the evening, which strengthens with the setting sun of life.”
— Jean de La Fontaine

12. “A real friend is one who walks in when the rest of the world walks out.”
— Unknown

13. “Friendship is a plant of slow growth and must undergo and withstand the shocks of adversity before it is entitled to the appellation.”
— George Washington

14. “Friendship is the only cement that will ever hold the world together.”
— Woodrow Wilson

15. “Friendship is the golden thread that ties the heart of all the world.”
— John Evelyn

16. “Friendship is born at that moment when one person says to another, ‘What! You too? I thought I was the only one!'”
— C.S. Lewis

17. “A friend is one that knows you as you are, understands where you have been, accepts what you have become, and still, gently allows you to grow.”
— William Shakespeare

18. “Friendship is always a sweet responsibility, never an opportunity.”
— Khalil Gibran

19. “A friend is someone who understands your past, believes in your future, and accepts you just the way you are.”
— Unknown

20. “Friendship is the only cement that will ever hold the world together.”
— Woodrow Wilson

21. “A friend is someone who gives you total freedom to be yourself.”
— Jim Morrison

22. “Friendship is the source of the greatest pleasures, and without friends even the most agreeable pursuits become tedious.”
— Thomas Aquinas

23. “A friend is one of the nicest things you can have, and one of the best things you can be.”
— Douglas Pagels

24. “True friendship is like sound health; the value of it is seldom known until it is lost.”
— Charles Caleb Colton

25. “A friend is what the heart needs all the time.”
— Henry Van Dyke

These quotes celebrate the beauty, depth, and importance of friendship as depicted in various books and writings.