Love and work are to people what water and sunshine are to plants.

Liberals and conservatives are opponents in the most literal sense, each using the myth of pure evil to demonize the other side and unite there own.

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

I'll suggest that the happiness hypothesis offered by Buddha and the Stoics should be amended: Happiness comes from within, and happiness comes from without. We need the guidance of both ancient wisdom and modern science to get the balance right.

I believe that an evolutionary approach specifying the foundation of our moral sense can allow us to appreciate Hindu and Muslim cultures where women are veiled and seem to us to lead restricted lives.

Our moral sense really evolved to bind groups together into teams that can cooperate in order to compete with other teams.

What set us apart from most or all of the other hominid species was our ultrasociality, our ability to be highly cooperative, even with strangers, people who are not at all related to us.