This required abandoning the idea that there is a universal quantity called time that all clocks measure. Instead, everyone would have his own personal time. The clocks of two people would agree if they were at rest with respect to each other but not if they were moving. This has been confirmed by a number of experiments, including one in which an extremely accurate timepiece was flown around the world and then compared with one that had stayed in place. If you wanted to live longer, you could keep flying to the east so the speed of the plane added to the earth

All that my work has shown is that you don't have to say that the way the universe began was the personal whim of God.

Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor.

I believe everyone should have a broad picture of how the universe operates and our place in it. It is a basic human desire. And it also puts our worries in perspective.

Philosophers have not kept up with modern developments in science. Particularly physics.

There is a real danger that computers will develop intelligence and take over. We urgently need to develop direct connections to the brain so that computers can add to human intelligence rather than be in opposition.

There is no prescribed route to follow to arrive at a new idea. You have to make the intuitive leap.