Showing tangible signs of caring and of empathy ensures that cabin fever never takes hold. It’s one of the personality traits Sir Ernest Shackleton looked for, when signing-on crew for his expeditions. As Rolf, who has Shackleton as a role model, always says: “I can teach anyone how to sail, but I can never change a person’s personality.” (via BBC News – How to get along for 500 days alone together)