Singular indeed.

Treaties enough, from that of Utrecht downward, are wearisomely mentioned here; but of the Berlin Treaty, Breslau Treaty, or any Treaty settling Silesia,--much less, of any Westminster Treaty, guaranteeing it to the King of Prussia,--there is not the faintest mention! Silesia, then, is not considered settled, by the high contracting parties?
Little George himself, who guaranteed it, in the hour of need, little more than a year ago, considers it fallen loose again in the new whirl of contingencies?
'Patience, Madam: what was good to give is good to take!' On what precise day or month Friedrich got notice of this expressive silence in the Treaty of Worms, we do not know; but from that day--!" Friedrich recollects another thing, one of many others: that of those "ulterior mountains," which Austria had bargained for as Boundary to Schlesien.

Wild bare mountains; good for what?
For invading Schlesien from the Austrian side; if for nothing else conceivable! The small riddle reads itself to him so, with a painful flash of light.

[_OEuvres de Frederic,_ iii.

34.] Looking intensely into this matter, and putting things together, Friedrich gets more and more the alarming assurance of the fate intended him; and that he will verily have to draw sword again, and fight for Silesia, and as if for life.