Misfortune tests the sincerity of friends.

Aesop

A friend is someone who is there for you when he’d rather be anywhere else.

Len Wein

Friendship is the breathing rose, with sweets in every fold

Oliver Wendell Holmes

True friendship is like sound health; the value of it is seldom known until it be lost.

Charles Caleb Colton

Walking with a friend in the dark is better than walking alone in the light.

Helen Keller

A friend is someone who knows the song in your heart and can sing it back to you when you have forgotten the words.

Author unknown