Animals can adapt to problems and make inventions, but often no faster than natural selection can do its work - the world acts as its own simulator in the case of natural selection.

If there be only hours, at least learn what there is time to learn.

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

He claimed that nearby gun thunder cleared the mind - but most everybody else agreed it made you daft.

He was guided by what he saw rather than by what he wanted to believe.

We're endangered by our own success.

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.