Stanislaw Ulam Quote
I was still very hopeful that much work lay ahead of me. Perhaps because much of what I had worked on or thought about had not yet been put into writing, I felt I still had things in reserve. Given this optimistic nature, I feel this way even now when I am past sixty.
Chapter 10, Back At Los Alamos, p. 208 - Adventures of a Mathematician - Third Edition (1991)