’Tis true, you don’t—but, pale and struck with terror,
Retire: but look into your past impression!
And you will find, though shuddering at the mirror
Of your own thoughts, in all their self-confession,
The lurking bias, be it truth or error,
To the unknown; a secret prepossession,
To plunge with all your fears—but where? You know not,
And that’s the reason why you do—or do not.