“Anybody can sympathise with the sufferings of a friend, but it requires a very fine nature to sympathise with a friend's success.”
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Oscar Wilde 812
Irish writer and poet 1854–1900Related quotes
“To be successful you need friends and to be very successful you need enemies.”
Source: The Other Side of Midnight

http://www.thisislondon.co.uk/showbiz/article-11621981-details/I'm+a+street+bum,+says+broke+Tyson/article.do;jsessionid=dZGvFJZGkLvsnbWWXZrVhsZ2kJlny8kkygtqYThr5ZL2nyWzmSjJ!-686754952
On himself

“And I'm sure it wouldn't interest anybody
Outside of a small circle of friends.”
"Outside Of A Small Circle Of Friends" http://web.cecs.pdx.edu/~trent/ochs/lyrics/small-circle-of-friends.html
Pleasures of the Harbor (1967)
Context: Look outside the window, there's a woman being grabbed
They've dragged her to the bushes and now she's being stabbed
Maybe we should call the cops and try to stop the pain
But Monopoly is so much fun, I'd hate to blow the game
And I'm sure it wouldn't interest anybody
Outside of a small circle of friends.

“Rejoicing in our joy, not suffering over our suffering, makes someone a friend.”
Buddhist Socteriological Ethics: A Study of the Buddha’s Central Teachings (1999)

“A man's growth is seen in the successive choirs of his friends”