It only takes twenty generations of selective breeding to create large differences or appearance and behavior in other mammals.

I think Republicans need to take income inequality more seriously. Not because I favor equality of outcomes. I do not. I think the Right is correct to stress merit and earned rewards, not handouts and forced equality. But I think what Republicans are blind to is that power corrupts.

It really is a fact that liberals are much higher than conservatives on a major personality trait called 'openness to experience.' People who are high on openness to experience just crave novelty, variety, diversity, new ideas, travel. People low on it like things that are familiar, that are safe and dependable.

Happiness requires changing yourself and changing your world. It requires pursuing your own goals and fitting in with others. Different people at different times in their lives will benefit from drawing more heavily on one approach or the other.

There are a couple of watersheds in human evolution. Most people are comfortable thinking about tool use and language use as watersheds. But the ability to play non-zero-sum games was another watershed.

Morality binds and blinds.

If you are in passionate love and want to celebrate your passion, read poetry. If your ardor has calmed and you want to understand your evolving relationship, read psychology. But if you have just ended a relationship and would like to believe you are better off without love, read philosophy.