“I went sailing up to Great Point, which is fourteen miles. It was fine and rough so we went out in the open ocean and shipped water grandly. I have bought a large swordfish sword for the agassiz of an old salt by the name of Judas,” Ernest Hemingway wrote to his brother Marcelline in one of his earliest known letters, shortly after his eleventh birthday, in 1910.

“Whom the gods love dies young,” wrote Menander in the late fourth century BC. “Whom the gods wish to destroy they first call promising,” Cyril Connolly noted over two millennia later.

“When I was young I walked all over this country, east and west,” said the Apache leader Cochise, “and saw no other people than the Apaches. After many summers I walked again and found another race of people had come to take it.”

Paul Cézanne’s father, a banker, was fond of telling his son, “Young man, young man, think of the future! With genius you die, with money you live.” At least this is according to Émile Zola, who recalled the words of admonishment in one of his letters to his friend Paul. The two had first met as teenagers at boarding school in the 1850s.

After watching a performance of his play Peter Pan with his five-year-old godson, J. M. Barrie asked the boy what he had liked best. “What I think I liked best,” the boy replied, “was tearing up the program and dropping the bits on people’s heads.”