I do not think there can be any defense for the view that knowledge is ever undesirable.
Very few people are able to discount the effect of circumstances upon their own characters.
Right discipline consists, not in external compulsion, but in the habits of mind which lead spontaneously to desirable rather than undesirable activities.
Philosophy is no longer the pillar of fire going before a few intrepid seekers after truth: it is rather an ambulance following in the wake of the struggle for existence and picking up the weak and wounded.
The danger is one which democracy by itself does not suffice to avert. A democracy in which the majority exercises its power without restraint may be almost as tyrannical as a dictatorship. Toleration of minorities is an essential part of wise democracy, but a part which is not always sufficiently remembered.
War does not determine who is right - only who is left.