Mr. Bloomberg is not overly ostentatious for a man of great wealth; Mr. Trump loves to show off his possessions. Mr. Bloomberg is a supporter of the arts and aligns himself with Manhattan’s sophisticated cultural scene; Mr. Trump relishes in being crude. Mr. Bloomberg began exploring his own presidential bid, as an independent, in part to block Mr. Trump from being elected. Mr. Trump, an avid user of Twitter, made positive comments about Mr. Bloomberg when he was in office. They existed in different circles of New York’s ultrarich: Mr. Bloomberg is known as a generous philanthropist; Mr. Trump appears to have been flinty in his giving.

Source: New York Times July 29, 2016 01:30 UTC