Who said "The most important thing is to have a good friend."?

This quote is attributed to Snoopy.

The most important thing is to have a good friend. - Snoopy

"The most important thing is to have a good friend."

Snoopy Friendship

"I think I'm dying. Send for a doctor immediately!"

"Rats! Another day, another disappointment."

"Sometimes I lie awake at night and ask, 'Is life a multiple choice test or an essay?' Then a dog barks and I realize it doesn't matter."

"I love mankind. It's people I can't stand."

"Friendship is built on trust and honesty."

"True friendship is worth more than gold."

"Good friends are like stars, always there even when you can't see them."

"Friendship means sacrifice."