Be caused by confidence that injury
Is veritable and no figment: since,
What, though proved fancy afterward, seemed fact
At the time, they argue shall excuse result.
That which we do, persuaded of good cause
For what we do, hold justifiable!—
So casuists bid: man, bound to do his best,
They would not have him leave that best undone
And mean to do his worst,—though fuller light
Show best was worst and worst would have been best.