Quoted in Evan Esar, The Dictionary of Humorous Quotations (1949). Colonel Tom Parker, Elvis Presley's manager, is said to have remarked, "You don't have to be nice to people you meet on the way up if you're not coming back down again."
"Russell Brand: Robin Williams’ Divine Madness Will No Longer Disrupt the Sadness of the World". The Guardian Opinion Page, www.theguardian.com. August 12, 2014.