They are under no illusions; they are too intellectual to think that man upon this earth can ever be quite free of original sin and the struggle.

And they mean death.

When they say that mankind shall be free at last, they mean that mankind shall commit suicide.

When they talk of a paradise without right or wrong, they mean the grave.
"They have but two objects, to destroy first humanity and then themselves.

That is why they throw bombs instead of firing pistols.