The loss of his Wilhelmina, had there been no other grief, has darkened all his life to Friedrich. Readers are not prepared for the details of grief we could give, and the settled gloom of mind they indicate. A loss irreparable and immeasurable; the light of life, the one loved heart that loved him, gone. His passionate appeals to Voltaire to celebrate for him in verse his lost treasure, and at least make her virtues immortal, are perhaps known to readers: [ODE SUR LA MORT DE S. A. S. MADAME LA PRINCESSE DE BAREITH (in _OEuvres de Voltaire,_ xviii. 79-86): see Friedrich's Letter to him (6th November, 1758); with Voltaire's VERSES in Answer (next month); Friedrich's new Letter (Breslau, 23d January 1759), demanding something more,--followed by the ODE just cited (Ib. lxxii. 402; lxxviii. 82, 92; or _OEuvres de Frederic,_ xxiii. 20-24: &c.) alas, this is a very feeble kind of immortality, and Friedrich too well feels it such. All Winter he dwells internally on the sad matter, though soon falling silent on it to others. The War is ever more dark and dismal to him; a wearing, harassing, nearly disgusting task; on which, however, depends life or death. This Year, he "expects to have 300,000 enemies upon him;" and "is, with his utmost effort, getting up 150,000 to set against them." Of business, in its many kinds, there can be no lack! In the intervals he also wrote considerably: one of his Pieces is a SERMON ON THE LAST JUDGMENT; handed to Reader De Catt, one evening:--to De Catt's surprise, and to ours; the Voiceless in a dark Friedrich trying to give itself some voice in this way! [_OEuvres de Frederic,_ xv. 1-10 (see Preuss's PREFACE there; Formey, _SOUVENIRS,_ i. 37; &c. &c.)] Another Piece, altogether practical, and done with excellent insight, brevity, modesty, is ON TACTICS; [REFLEXIONS SUR LA TACTIQUE: in _OEuvres de Frederic,_ xxviii. 153-166.]--properly it might be called, "Serious very Private Thoughts," thrown on paper, and communicated only to two or three, "On the new kind of Tactics necessary with those Austrians and their Allies," who are in such overwhelming strength. "To whose continual sluggishness, and strange want of concert, to whose incoherency of movements, languor of execution, and other enormous faults, we have owed, with some excuse for our own faults, our escaping of destruction hitherto,"--but had better NOT trust that way any longer! Fouquet is one of the highly select, to whom he communicates this Piece; adding along with it, in Fouquet's case, an affectionate little Note, and, in spite of poverty, some New-year's Gift, as usual,--the "Widow's Mite [300 pounds, we find]; receive it with the same heart with which it was set apart for you: a small help, which you may well have need of, in these calamitous times." ["Breslau, 23d December, 1758;" with Fouquet's Answer, 2d January, 1759: in _OEuvres de Frederic,_ xx. 114-117.] Fouquet much admires the new Tactical Suggestions;--seems to think, however, that the certainly