Locks previously in use cost a great deal more to make and keep in repair and were much heavier.
— from The American Postal Service History of the Postal Service from the Earliest Times by Louis Melius

1. Knowledge absolutely, is a word without meaning: all knowledge is relative, and has a definite object or cognitum : there can be no scientia scientiarum .
— from Plato and the Other Companions of Sokrates, 3rd ed. Volume 2 by George Grote

Pursuing the same principles, the manufactory becomes gradually so enlarged, that the expense of lighting during the night amounts to a considerable sum; and as there are already attached to the establishment persons who are up all night, and can therefore constantly attend to it, and also engineers to make and keep in repair any machinery, the addition of an apparatus for making gas to light the factory leads to a new extension, at the same time that it contributes, by diminishing the expense of lighting, and the risk of accidents from fire, to reduce the cost of manufacturing.
— from On the Economy of Machinery and Manufactures by Charles Babbage

He takes up just as much as he needs to complete the article he wishes to make; then he presses it against the lip of marble and kneads it round and round until it consolidates.
— from De Re Metallica, Translated from the First Latin Edition of 1556 by Georg Agricola

Likewise I discern that the butterflies are not true butterflies, but wooden shavings, which, being spirted up from the wood by the violence of the machinery, and kept in rapid and not equal movement by the impulse of its rotation on the air, flutter and play, and rise and fall, and conduct themselves as like butterflies as heart could wish.
— from The Uncommercial Traveller by Charles Dickens

The canvas canoe is more widely used at the present time than any other form, which is no doubt due to the fact that it is very simple to make and keep in repair, and the cost of its material is small.
— from The Boy Craftsman Practical and Profitable Ideas for a Boy's Leisure Hours by A. Neely (Albert Neely) Hall