You will find men like him in all of the world's religions. They know that we represent reason and science, and, however confident they may be in the….

It was a pity that there was no radar to guide one across the trackless seas of life. Every man had to find his own way, steered by some secret compa….

One of the great tragedies of mankind is that morality has been hijacked by religion. So now people assume that religion and morality have a necessar….

The object of teaching a child is to enable the child to get along without the teacher. We need to educate our children for their future, not our pas….

In all the universe there is nothing more precious than mind..

Good morning, doctors. I have taken the liberty of removing Windows 95 from my hard drive..

One orbit, with a radius of 42,000 kilometers, has a period of exactly 24 hours. A body in such an orbit, if its plane coincided with that of the Ear….

I want to be remembered most as a writer - one who entertained readers, and, hopefully, stretched their imagination as well..

The creation of wealth is certainly not to be despised, but in the long run the only human activities really worthwhile are the search for knowledge,….

SETI is probably the most important quest of our time , and it amazes me that governments and corporations are not supporting it sufficiently..

I am an optimist. Anyone interested in the future has to be otherwise he would simply shoot himself..

Civilization will reach maturity only when it learns to value diversity of character and of ideas..

You don't believe in organized religion, yet a major theme in so many of your works seems to be a quest for God..

Every revolutionary idea seems to evoke three stages of reaction. They may be summed up by the phrases: 1- It's completely impossible. 2- It's possib….

'The Devil in the Dark' impressed me because it presented the idea, unusual in science fiction then and now, that something weird, and even dangerous….

When you finally understand the universe, it will not only be stranger than you imagine, it will be stranger than you can imagine..

I also believe - and hope - that politics and economics will cease to be as important in the future as they have been in the past; the time will come….

Anything that is theoretically possible will be achieved in practice, no matter what the technical difficulties are, if it is desired greatly enough..

I'm quite fond of the writer who told a beginning author, "If you've got a message, use Western Union.".

The information age has been driven and dominated by technopreneurs. We now have to apply these technologies in saving lives, improving livelihoods a….

It will be possible in a few more years to build radio controlled rockets which can be steered into such orbits beyond the limits of the atmosphere a….