Contemporary philosophers are facing problems that were unthinkable only one century ago, such as whether space and time are mutually Independent, whether there is objective chance or only uncertainty, whether physics can explain chemical change, whether our behavior is fully determined by our genomes, whether ideation can change the brain, or whether either the economy or ideas are the ultimate roots of the social.

All genuine philosophy transcends national boundaries. Patriotic philosophies are just nationalist ideologies.

A distinguished cognitive neuroscientist confessed to me that, because of his religious upbringing, he could not get rid of psychoneural dualism. The idea that one ceases to be after death was too painful to him.

The fact is that all the important political philosophers and scientists from the great Aristotle on, with the exception of those of the French Enlightenment and Mill, have sided with the powers that be.

My Third-World roots remind me that the vast majority of our fellow human beings live hungry, sick, and uneducated, and that most social scientists, even in that world, ignore that ugly reality. This is why my papers in mathematical sociology deal not with free choice among 30 flavors of ice-cream, but with social structure, social cohesion, and social marginality.

I pity the babies whose mothers are busy texting trivialities instead of playing with their children; I pity the children who are tethered to their cell phones instead of playing ball; I pity the adolescents who are wasting their best years holding one of those artefacts instead of the hand of another young person.

Under theocracies and other authoritarian regimes, the rulers are the moral authorities. Under genuine democracy some basic values are entrenched in the legal system, which is expected to be under democratic vigilance, and others are left to the person or the group, which ideally debate moral problems in a rational, free and cooperative manner.