What do you need to be happy?

In his book, Endurance, Alfred Lansing writes about Earnest Shackleton and his 28-man crew, who were stranded in an island of ice in the Antarctica for 17 months in 1914 and 1915. With little food—and without cell phones!

Lansing remarks about Dr. Alexander Macklin’s “good humor.”

Dr. Macklin writes in this diary, “I read somewhere that all a man needs to be happy is a full stomach and warmth, and I begin to think it is nearly true.”