The discovery that the universe was expanding was one of the great intellectual revolutions of the twentieth century. - Stephen Hawking

The subject of this book is the structure of space-time on length-scales from 10^-13cm, the radius of an elementary particle, up to 10²⁸cm, the radius of the universe. ...we base our treatment on Einstein's General Theory of Relativity. This theory leads to two remarkable predictions about the universe: first, that the final fate of massive stars is to collapse behind an event horizon to form a 'black hole' which will contain a singularity; and secondly, that there is a singularity in our past which constitutes, in some sense, a beginning to the universe.

As we shall see, the concept of time has no meaning before the beginning of the universe. This was first pointed out by St. Augustine. When asked: “What did God do before he created the universe?” Augustine didn’t reply: “He was preparing Hell for people who asked such questions.

I have noticed even people who claim everything is predestined, and that we can do nothing to change it, look before they cross the road.