Leo Szilard — American Scientist born on February 11, 1898, died on May 30, 1964

Leo Szilard was a Hungarian-American physicist and inventor. He conceived the nuclear chain reaction in 1933, patented the idea of a nuclear reactor with Enrico Fermi, and in late 1939 wrote the letter for Albert Einstein's signature that resulted in the Manhattan Project that built the atomic bomb... (wikipedia)

We turned the switch, saw the flashes, watched for ten minutes, then switched everything off and went home. That night I knew the world was headed for sorrow.
If you want to succeed in the world, you don't have to be much cleverer than other people. You just have to be one day earlier.
If one knows only what one is told, one does not know enough to be able to arrive at a well-balanced decision.
Don't lie if you don't have to.
Do your work for six years; but in the seventh, go into solitude or among strangers, so that the memory of your friends does not hinder you from being what you have become.