Stephen Hawking
Stephen Hawking
Stephen William Hawking, CH, CBE, FRS, FRSAis an English theoretical physicist, cosmologist, author and Director of Research at the Centre for Theoretical Cosmology within the University of Cambridge. His scientific works include a collaboration with Roger Penrose on gravitational singularity theorems in the framework of general relativity, and the theoretical prediction that black holes emit radiation, often called Hawking radiation. Hawking was the first to set forth a theory of cosmology explained by a union of the general theory of...
NationalityEnglish
ProfessionScientist
Date of Birth8 January 1942
CityOxford, England
We each exist for but a short time, and in that time explore but a small part of the whole universe
Observations indicate that the universe is expanding at an ever increasing rate. It will expand forever, getting emptier and darker.
Eternity is a long time, especially towards the end.
As those who have seen Jurassic Park will know, this means a tiny disturbance in one place, can cause a major change in another. A butterfly flapping its wings can cause rain in Central Park, New York. The trouble is, it is not repeatable. The next time the butterfly flaps its wings, a host of other things will be different, which will also influence the weather. That is why weather forecasts are so unreliable.
If there really is a complete unified theory that governs everything, it presumably also determines your actions. But it does so in a way that is impossible to calculate for an organism that is as complicated as a human being. The reason we say that humans have free will is because we can't predict what they will do.
We find ourselves in a bewildering world. We want to make sense of what we see around us and to ask: What is the nature of the universe? What is our place in it and where did it and we come from? Why is it the way it is?
The increase of disorder or entropy is what distinguishes the past from the future, giving a direction to time.
A million million million million (1 with twenty-four zeros after it) miles, the size of the observable universe.
The rate of progress is so rapid that what one learns at school or university is always a bit out of date. Only a few people can keep up with the rapidly advancing frontier of knowledge, and they have to devote their whole time to it and specialize in a small area. The rest of the population has little idea of the advances that are being made or the excitement they are generating.
Mankind's greatest achievements have come about by talking and its greatest failures by not talking. It doesn’t have to be like this.
It matters if you don't just give up.
Never put off the work till tomorrow what you can put off today.
If the rate of expansion one second after the Big Bang had been smaller by even one part in a hundred thousand million million, it would have recollapsed before it reached its present size. On the other hand, if it had been greater by a part in a million, the universe would have expanded too rapidly for stars and planets to form.
It often happens that I have an idea, but then I try to fill in the intermediate steps and find they don't work, so I have to give it up.