When is a Man Old?

"I dread to come to the end of the year,said a friend to me recently, "it makes me realize I am growing old.”
William James, the great psychologist, said that most men are "old fogies at twenty-five",He was right. Most men at twenty-five are satisfied with their jobs. They have accumulated the little stock of prejudices that they call their "Principles, Inflatable Slide giant " and closed their minds to all new ideas; they have ceased to grow.
The minutea man ceases to grow-no matter what his years-that minute he begins to be old. On the other hand, the really great man never grows old.
Goethe passed out at eighty-three, and finished his Faust only a few years earlier; Gladstone took up a new language when he was seventy. Laplace, the astronomer, was still at work when death caught up with him at seventy-eight. He died crying, "What we know is nothing; what we do not know is immense."
And there you have the real answer to the question, "When is a man old?"
Laplace at seventy-eight died young. He was still unsatisfied, still sure that he had a lot to learn.
As long as a man can keep himself in that attitude of mind, as long as he can look back on every year and say , "I grew," he is still young.