Now indeed do I know that all the pleasures of this life pass away like a shadow and a dream, or fade like the flower of the field.
— from Don Quixote by Miguel de Cervantes Saavedra

And she answered, "Well do I know that, and that it was all by your father; yet I blame him not, for this is an affair of N'karnayoo , the days of old; and even yet it is not at an end, and the greatest is to come.
— from Algonquin Legends of New England by Charles Godfrey Leland

But how do I know that all truth is not merely subjective?
— from Beulah by Augusta J. (Augusta Jane) Evans

In general there was no difficulty in killing them, as they are incapable either of flight or resistance, their motion being the most unwieldy that can be imagined, and all the time they are in motion, their blubber is agitated in large waves under the skin.
— from A General History and Collection of Voyages and Travels, Volume 11 Arranged in Systematic Order: Forming a Complete History of the Origin and Progress of Navigation, Discovery, and Commerce, by Sea and Land, from the Earliest Ages to the Present Time by Robert Kerr

And I beg of you Not needlessly to tax your mental powers By now suggesting the delights of drink: I know them; and they give me headaches.
— from Mr. Faust by Arthur Davison Ficke

Did I know this and that and the other about the family?
— from The Retrospect by Ada Cambridge

Well do I know thy arts, thy wiles— They withered Love's young wreathèd smiles;
— from The Complete Poems of Sir Thomas Moore Collected by Himself with Explanatory Notes by Thomas Moore

The cap'n did it, kneeling to adjust the sticks more nicely; and when one fell forward with the burning of the kindling, lifted it and laid it back solicitously.
— from Country Neighbors by Alice Brown