As Evelyn Waugh observed in his wartime novel Put Out More Flags (1942): "The human mind is inspired enough when it comes to inventing horrors; it is when it tries to invent a Heaven that it shows itself cloddish."
"Revolutions have never lightened the burden of tyranny: they have only shifted it to another shoulder." --George Bernard Shaw
(I don't necessarily agree with this, but it's an interesting quotation).
Dupre goes on to write:
It is for this reason that despotisms, unlike tyrannies, are typically long-lasting and stable and are not marked by problems of succession.
"The means of defense against foreign danger historically have become the instruments of tyranny at home." --James Madison