The physical extinction of the human race is one possibility.

We humans have millions of years of evolutionary baggage that makes us regard competition in a deadly light.

One of his greatest talents was empathy; no sadist can aspire to perfection without that diagnostic ability.

Even the largest avalanche is triggered by small things.

Politics is good; when it works properly, disagreements get solved without people beating each other up. But when a regime knows its days are numbered, there's always the chance it may use its position to change the rules and make the debate it is losing irrelevant.

But every time our ability to access information and to communicate it to others is improved, in some sense we have achieved an increase over natural intelligence.

We will soon create intelligences greater than our own ... When this happens, human history will have reached a kind of singularity, an intellectual transition as impenetrable as the knotted space-time at the center of a black hole, and the world will pass far beyond our understanding.