I looked for it [heavy hydrogen, deuterium] because I thought it should exist. I didn't know it would … - Harold Urey

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With the historical fictions, I was already doing so much research, and so much of the stories was anchored by historical truth that the move to nonfiction didn't feel all that dramatic - just another half-step to the right.

Harold Urey

I looked for it [heavy hydrogen, deuterium] because I thought it should exist. I didn't know it would have industrial applications or be the basic for the most powerful weapon ever known [the nuclear bomb]. . . I thought maybe my discovery might have the practical value of, say, neon in neon signs.

Discovery, Known, Powerful, Science, Value

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All of us who study the origin of life find that the more we look into it, the more we feel it is too complex to have evolved anywhere. We all believe as an article of faith that life evolved from dead matter on this planet. It is just that life's complexity is so great, it is hard for us to imagine that it did.

Believe, Complex, Dead, Looks, Origin Of Life, Planet

Life is not a miracle. It is a natural phenomenon, and can be expected to appear whenever there is a planet whose conditions duplicate those of the earth.

Appear, Earth, Life, Miracle, Science, Whenever

[My study of the universe] leaves little doubt that life has occurred on other planets. I doubt if the human race is the most intelligent form of life.

Doubt, Intelligent, Race, Study

[Pure research] is worth every penny it costs.

Cost, Costs, Research, Science, Worth

Above all, I regret that scientific experiments-some of them mine-should have produced such a terrible weapon as the hydrogen bomb. Regret, with all my soul, but not guilt.

Bomb, Guilt, Regret, Science, Should Have, Soul