Insights into the little-studied realm of last words.

Mort Felix liked to say that his name, when read as two Latin words, meant “happy death.” When he was sick with the flu, he used to jokingly remind his wife, Susan, that he wanted Beethoven’s “Ode to Joy” played at his deathbed. But when his life’s end arrived at the age of 77, he lay in his study in his Berkeley, California, home, his body besieged by cancer and his consciousness cradled in morphine, uninterested in music and refusing food as he dwindled away over three weeks in 2012. “Enough,” he told Susan. “Thank you, and I love you, and enough.” When she came downstairs the next morning, she found Felix dead.