Photographic postcard of two gentlemen, circa 1904; Sassoon: The Worlds of Philip and Sybil, by Peter Stansky, New Haven: Yale, 2003, signed and inscribed. 

Philip and Sybil's mother Aline (nee Rothschild) was a great friend of Benard Berenson, who met her at St. Mortiz in 1904. 

Violet Asquith visited Aline and Sybil in France in 1904 when Violet was 17: "We lunched with Sassbags [Violet's nickname for Lady Sassoon] in her palatial house at 23 Avenue Marigny teeming with Greuze, Van Dycks & priceless furniture.  Conversation flagged at lunch.  I always feel tongue tied in that atmosphere of almost oppressive kindness."

As Mr Stansky writes, Violet's reaction is "suggestive of how rich Jews were viewed by much of English society: willing to accept their hospitality, but not totally comfortable, not at ease as one might be with 'one of us.'" 

The author goes on to describe a photograph taken at a house party in 1904, given by Mrs William James for Edward VII and his friends.  Edward is center with his mistress Mrs George Keppel, and Aline and Edward Sassoon are also present, being "almost at the centre of Edwardian society, but as Jews, at a slight remove."

Immense wealth certainly helps when one is an outsider, in the minority, or not fully accepted by society.  Extraordinary beauty, an exceptionally versatile talent as well as other sorts of useful and impressive endowment can also ease the pain of being at a slight remove, or the awkwardness that comes from knowing one is almost but not quite at the center of things.  In all cases, however, I think the hardest part is remembering that one can never be too kind.  Your detrators may call your gracious hospitality "oppressive" or your style "over the top."   There may be unkind nicknames.  But at the end of the day it's almost always cheaper to be nice.