People are under the impression that dictionaries legislate language. What a dictionary does is keep track of usages over time.

As women are empowered, violence can come down, for a number of reasons. By all measures, men are the more violent gender.

It's natural to think that living things must be the handiwork of a designer. But it was also natural to think that the sun went around the earth. Overcoming naive impressions to figure out how things really work is one of humanity's highest callings.

The rules of friendship are tacit, unconscious; they are not rational. In business, though, you have to think rationally.

The great appeal of the doctrine that the mind is a blank slate is the simple mathematical fact that zero equals zero.

A successful learner, . . . must be constrained to draw some conclusions from the input and not others.

Plants can't very well defend themselves by their behavior, so they resort to chemical warfare, and plants are saturated with toxins and irritants to deter creatures like us who want to eat them.