"Castlereagh Papers," 3rd series, vol. i., p. 74. This was written, of course, before he heard of the Frankfurt proposals; but it anticipates them in a remarkable way. Thiers states that Castlereagh, after hearing of them, sent Aberdeen new instructions. I cannot find any in our archives. This letter warned Aberdeen against any compromise on the subject of Antwerp; but it is clear that Castlereagh, when he came to the allied headquarters, was a partisan of peace, as compared with the Czar and the Prussian patriots. Schwarzenberg wrote (January 26th) at Langres: "We ought to make peace here: our Kaiser, also Stadion, Metternich, even Castlereagh, are fully of this opinion—but Kaiser Alexander!"
Fournier, "Der Congress von Châtillon," p. 242.
"Castlereagh Papers," loc. cit., p. 112.