Mr. Lyell's system of geology is just half the truth, and no more. He affirms a great deal that is true, and he denies a great deal which is equally true; which is the general characteristic of all systems not embracing the whole truth.
Compromise used to mean that half a loaf was better than no bread. Among modern statesmen it really seems to mean that half a loaf; is better than a whole loaf.
I was cautious in what I said before the young lady; for I could not be sure that she was sane; and, in fact, there was a certain restless brilliancy about her eyes that half led me to imagine she was not.
Half the sum of attraction, on either side, might have been enough, for he had nothing to do, and she had hardly any body to love." (of Anne Elliot and Captain Wentworth, Persuasion)