d) It is well known that where the white man has invaded a primitive culture, the most destructive effects have come not from physical weapons but from ideas.
a) The Holy Office knew this full well when it caused heretics to be burned in days gone by.
b) Indeed, the concept of free speech only exists in our modern society because when you are inside a community, you are conditioned by the conventions of the community to such a degree that it is very difficult to conceive of anything really destructive.
c) It is only someone looking on from outside that can inject the dangerous thoughts.
