In life, unlike chess, the game continues after checkmate.

There are no nations! There is only humanity. And if we don't come to understand that right soon, there will be no nations, because there will be no humanity.

It seems to me that God is a convenient invention of the human mind

Science is dangerous. There is no question but that poison gas, genetic engineering, and nuclear weapons and power stations are terrifying. It may be that civilization is falling apart and the world we know is coming to an end. In that case, why no turn to religion and look forward to the Day of Judgment, ... [being] lifted into eternal bliss ... [and] watching the scoffers and disbelievers writhe forever in torment.

In life, people will take you at your own reckoning.

When I read about the way in which library funds are being cut and cut, I can only think that American society has found one more way to destroy itself.

The greatest weapons in the conquest of knowledge are an understanding mind and the inexorable curiosity that drives it on.