You always have great information!
I’ve got the Clausewitz book on my to-read pile; it’s seventh.
Is the last quote from Tacitus?
What you may be referring to are my own embellishments, which were very likely obtained from a variety of sources.
If you doubt this or lack the power to accept it, or it offends your idea of the way things "ought" to be, even for a moment, you do not even deserve freedom and you are not worthy of peace.