Arrakis ... Dune ... The desert planet.
Thufir Hawat, his father's Assassin master, had explained it all to him: their mortal enemies, the House of Harkonnen, had for eighty years held Arrakis as their quasi-fief. They had signed a contract with CHOAM and obtained a concession on the production of melange, the youth spice. Now the House of Harkonnen left, and instead the House of Atreides had Arrakis as its fief ... which seemed to be a victory for Duke Leto. But Hawat had said that this apparent victory was fatal, since Duke Leto was well-liked among the Great Houses of the National Council.
"A well-liked man arouses the envy of the mighty," Hawat had said.