How does George Eliot use imagery in Middlemarch?

Imagery:

But the idea of this dried-up pedant, this elaborator of small explanations about as important as the surplus stock of false antiquities kept in a vendor’s back chamber, having first got this adorable young creature to marry him, and then passing his honeymoon away from her, groping after his mouldy futilities (Will was given to hyperbole) – this sudden picture stirred him with a sort of comic disgust: he was divided between the impulse to laugh aloud and the equally unseasonable impulse to burst into scornful invective.

For my part I am very sorry for him. It is an uneasy lot at best, to be what we call highly taught and yet not to enjoy: to be present at this great spectacle of life and never to be liberated from a small hungry shivering self – never to be fully possessed by the glory we behold, never to have our consciousness rapturously transformed into the vividness of a thought, the ardour of a passion, the energy of an action, but always to be scholarly and uninspired, ambitious and timid, scrupulous and dim-sighted.