Who said "You must have many friends if you want to keep them."?

This quote is attributed to Brendan Behan.

You must have many friends if you want to keep them. - Brendan Behan

"You must have many friends if you want to keep them."

Brendan Behan Friendship

Playwright Novelist Irish 1923–1964

"I am a daylight atheist."

"There is no such thing as bad publicity except your own obituary."

"I respect kindness to great degree but I do not depend on it."

"The only thing to do with good advice is to pass it on."

"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."