Dogma demands authority, rather than intelligent thought, as the source of opinion; it requires persecution of heretics and hostility to unbelievers; it asks of its disciples that they should inhibit natural kindliness in favor of systematic hatred.
Love is wise – Hatred is foolish.
Why is propaganda so much more successful when it stirs up hatred than when it tries to stir up friendly feeling?
Much that passes as idealism is disguised hatred or disguised love of power.
The human heart as modern civilization has made it is more prone to hatred than to friendship. And it is prone to hatred because it is dissatisfied.
Hatred of enemies is easier and more intense than love of friends. But from men who are more anxious to injure opponents than to benefit the world at large no great good is to be expected.