[555] When I say that he draws his portrait, it will be understood that he is not skillful enough to delineate all the features of his face in such a manner that it would be recognized.
— from Picture-Writing of the American Indians Tenth Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1888-89, Government Printing Office, Washington, 1893, pages 3-822 by Garrick Mallery

Perhaps you will find that he is not so easily to be destroyed.
— from Theft: A Play In Four Acts by Jack London

When that is accomplished he is no longer a prisoner, but a good and loyal citizen and everyone is glad that he is now strong enough to resist doing wrong.
— from The Patchwork Girl of Oz by L. Frank (Lyman Frank) Baum

How the bird has survived with so many “friends” thirsting for his blood is hard to tell; but for all his trustfulness he is not so easily taken.
— from The Mentor: Game Birds of America, Vol. 1, Num. 34, Serial No. 34 by Edward Howe Forbush

I shall say that he is not strong enough to attempt to fight against you who are ever-victorious, as he has no hope of help from outside; and, finally, I shall say that I will be the intermediary between you and him."
— from Fire and Sword in the Sudan A Personal Narrative of Fighting and Serving the Dervishes 1879-1895 by Slatin, Rudolf Carl, Freiherr von

But now he is so much threatened by the M'Martins, that he is not secure enough to stay where he is, being Ardmurchan, which occasions this trouble to you.
— from Life of Johnson, Volume 5 Tour to the Hebrides (1773) and Journey into North Wales (1774) by James Boswell

That he is not strong enough to carry through a purpose-novel is not much to his discredit, for hardly anybody ever has been.
— from A History of the French Novel, Vol. 2 To the Close of the 19th Century by George Saintsbury

Perhaps it should be explained that Archy's carelessness as to punctuation and capitals is not mere ostentation, but arises from the fact that he is not strong enough to work the shift key of his typewriter.
— from Shandygaff A number of most agreeable Inquirendoes upon Life & Letters, interspersed with Short Stories & Skits, the whole most Diverting to the Reader by Christopher Morley

Well, he has found by personal experience that he is not so easy to pacify, and that on my part no zeal has been lacking either on his or your behalf.
— from The Letters of Cicero, Volume 1 The Whole Extant Correspodence in Chronological Order by Marcus Tullius Cicero