Present annual world energy consumption is about equal to the annihilation energy of 4 tons of matter.

The factor most ignored in discussing interstellar flight is the kinetic energy that must be invested in the ship to make its tons of matter move at a substantial fraction of the speed of light.

Antimatter is not a source of energy for us, it's a method of storing energy, compact but inefficient.

No one can deny the excitement of visiting another world.

Years of science fiction have produced a mindset that it is human destiny to expand from Earth, to the Moon, to Mars, to the stars.

Above all, I would not expect a wise race, at great expense, to set loose an army of self-replicating robots.

It would be a pity if, frustrated by the price of travel, we elected to become a society that never made contact, that never gave SETI a fair chance.

In the past, on Earth, it has largely been to exploit foreign resources and to expand the domestic territory.

My wish is that you may be loved to the point of madness.

When I compare myself and my opponents in other countries in the light of history, I do not fear the verdict on our respective mentalities.

God loves it when His children pray BIG, BOLD PRAYERS. Don't be afraid to ask your Father for anything!

Tradition is laziness.

It was in 2003 that I realised there was no choice but to have dialysis treatment - by the time of the World Cup that year, I could barely walk. A year later, I finally had a kidney transplant.

I am only able to be honest. And sometimes my view of the world is pretty dark. But still funny.

The 9/11 strikes left an indelible impact on our minds, but in relative terms, the scale of casualties actually wasn't all that high.

Online dating is cool but I think Myspace and Facebook is a little bit off key.

You have to have patience in this field.

When all lies, deceit, pretense is stripped away, what remains? The truth of a painting, or a book or a man.