knowledge Quotes

Even if it turns out that time travel is impossible, it is important that we understand why it is impossible.

I believe things cannot make themselves impossible.

I had not expected 'A Brief History of Time' to be a best seller.

The radiation left over from the Big Bang is the same as that in your microwave oven but very much less powerful. It would heat your pizza only to minus 271.3*C - not much good for defrosting the pizza, let alone cooking it.

It was Einstein's dream to discover the grand design of the universe, a single theory that explains everything. However, physicists in Einstein's day hadn't made enough progress in understanding the forces of nature for that to be a realistic goal.

As scientists, we step on the shoulders of science, building on the work that has come before us - aiming to inspire a new generation of young scientists to continue once we are gone.

Some people would claim that things like love, joy and beauty belong to a different category from science and can't be described in scientific terms, but I think they can now be explained by the theory of evolution.

Time travel was once considered scientific heresy, and I used to avoid talking about it for fear of being labelled a 'crank.'

I believe the universe is governed by the laws of science. The laws may have been decreed by God, but God does not intervene to break the laws.

It's time to commit to finding the answer, to search for life beyond Earth. Mankind has a deep need to explore, to learn, to know. We also happen to be sociable creatures. It is important for us to know if we are alone in the dark.