This means that at earlier times objects would have been closer together. In fact, it seemed that there was a time, about ten or twenty thousand million years ago, when they were all at exactly the same place and when, therefore, the density of the universe was infinite.

---

I am just a child who has never grown up. I still keep asking these 'how' and 'why' questions. Occasionally, I find an answer.

---

We don't let animals suffer, so why humans?

---

Money is not everything. There's Master card & Visa.

---

The twentieth century saw man's view of the universe transformed: we realized the insignificance of our planet in the vastness of the universe, and we discovered that time and space we curved and inseparable , that the universe was expanding, and that it had a beginning in time.

---

Equations are just the boring part of mathematics. I attempt to see things in terms of geometry.

---

I used to think information was destroyed in black hole. This was my biggest blunder, or at least my biggest blunder in science.

---

I've noticed that even people who believe in fate look both ways before crossing the street.

---

Although I cannot move, and I have to speak through a computer, in my mind, I am free.

---

contains on average some one hundred billion stars. If a star were a grain of salt, you could fit all the stars visible to the naked eye on a teaspoon, but all the stars in the universe would fill a ball more than eight miles wide.

---