It is impossible to imagine a four-dimensional space. I personally find it hard enough to visualize a three-dimensional space!

There is nothing bigger or older than the universe.

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

I think the brain is essentially a computer and consciousness is like a computer program. It will cease to run when the computer is turned off. Theoretically, it could be re-created on a neural network, but that would be very difficult, as it would require all one's memories.

Though we feel we can choose what we do, our understanding of the molecular basis of biology shows that biological processes are governed by the laws of physics and chemistry and therefore are as determined as the orbits of the planets.

If one is physically disabled, one cannot afford to be psychologically disabled as well.

What I have learned from life is to make the most of what you have got.