Exactitude

[W]hen making a passage from one feeding-ground to another, the sperm whales, guided by some infallible instinct—say, rather, secret intelligence from the Deity—mostly swim in veins, as they are called; continuing their way along a given ocean-line with such undeviating exactitude, that no ship ever sailed her course, by any chart, with one tithe of such marvellous precision.

He paced stiffly, looking with extreme exactitude at Lingard's face; looking neither to the right nor to the left but at the face only, as if there was nothing in the world but those features familiar and dreaded; […]

In Newspeak, euphony outweighed every consideration other than exactitude of meaning.