Authors:

For many years I was the youngest among my mathematical friends. It makes me melancholy to realize that I now have become the oldest in most groups of scientists.

"Adventures of a Mathematician" by Stanislaw Ulam, Third Edition, (p. 37), 1991.
For many years I was the youngest among my mathematical friends. It makes me melancholy to realize that I now have become the oldest in most groups of scientists.