Stephen Hawking Quotes.

1. "La física cuántica es un nuevo modelo de la realidad que nos proporciona una imagen del universo que en muchos conceptos fundamentales para nuestra comprensión intuitiva de la realidad carecen de significado."
- Stephen Hawking, The Grand Design

2. "In physics a system is said to have a symmetry if its properties are unaffected by a certain transformation such as rotating it in space or taking its mirror image. For example, if you flip a donut over, it looks exactly the same (unless it has a chocolate topping, in which case it is better just to eat it)."
- Stephen Hawking, The Grand Design

3. "if you take a positivist position, as I do, questions about reality don’t have any meaning. All one can ask is whether imaginary time is useful in formulating mathematical models that describe what we observe."
- Stephen Hawking, Stephen Hawking: The Playboy Interview

4. "The most remarkable property of the universe is that it has spawned creatures able to ask questions."
- Stephen Hawking, Illustrated Theory of Everything: The Origin and Fate of the Universe

5. "As often happens in science, discoveries are made in the pursuit of an elusive (and sometimes nonexistent) goal."
- Stephen Hawking, Illustrated Theory of Everything: The Origin and Fate of the Universe

6. "Time and space are finite in extent, but they don't have any boundary or edge. They would be like the surface of the earth, but with two more dimensions."
- Stephen Hawking, Black Holes and Baby Universes

7. "We got through all of Genesis and part of Exodus before I left. One of the main things I was taught from this was not to begin a sentence with And. I pointed out that most sentences in the Bible began with And, but I was told that English had changed since the time of King James. In that case, I argued, why make us read the Bible? But it was in vain. Robert Graves was very keen on the symbolism and mysticism in the Bible at that time."
- Stephen Hawking, Black Holes and Baby Universes

8. "There is no way that we can predict the weather six months ahead beyond giving the seasonal average"
- Stephen Hawking, Black Holes and Baby Universes

9. "The people who actually make the advances in theoretical physics don't think in these categories that the philosophers and the historians of science subsequently invent for them"
- Stephen Hawking, Black Holes and Baby Universes

10. "There's a sick joke that the reason we have not been contacted by an alien civilization is that civilizations tend to destroy themselves when they reach our stage. But I have sufficient faith in the good sense of public to believe that we might prove this wrong."
- Stephen Hawking, Black Holes and Baby Universes