One should believe only what can be chosen to be true or just. Irrational (or unjustified) beliefs should be avoided because they can have disastrous practical consequences.

Only the stupid and the wicked can fear rational criticism.

All the electronic devices are weakening the social bonds. Sociologists and psychologists should study this serious threat instead of repeating that communication is the cement of society.

In any event, I don't believe in instant philosophy, because interesting problems take a long time to understand and work out. Just think of the problems of truth and justice.

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.

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.

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.