If we are not prepared to defend a tolerant society against the onslaught of the intolerant, then the tolerant will be destroyed, and tolerance with them.

The question is not how to get good people to rule; THE QUESTION IS: HOW TO STOP THE POWERFUL from doing as much damage as they can to us.

It is part of my thesis that all our knowledge grows only through the correcting of our mistakes.

There is no pure, disinterested, theory-free observation.

A theory that explains everything, explains nothing

The conspiracy theory of society... comes from abandoning god and then asking: "Who is in his place"

Rationalism is an attitude of readiness to listen to contrary arguments and to learn from experience... of admitting that "I may be wrong and you may be right and, by an effort, we may get nearer the truth."