In friendship your heart is like a bell struck every time your friend is in trouble.
Henry Ward Beecher
Let me be alone to the end of the world, rather than that my friend should overstep by a word or a look his real sympathy.
Emerson
The vital air of friendship is composed of confidence.
Joseph Roux
Friendship closes its eyes rather than see the moon eclipst; while malice denies that it is ever at the full.
J. C. and A. W. Hare
The most I can do for my friend is simply to be his friend.