How does Moliere use imagery in The Imaginary Invalid?

Imagery:

My reason is, that seeing myself infirm and sick, I wish to have a son-in-law and relatives who are doctors, in order to secure their kind assistance in my illness, to have in my family the fountain-head of those remedies which are necessary to me, and to be within reach of consultations and prescriptions.

"...Toinette, listen to me. If ever you make my husband angry again, I will send you away. Come, give me his fur cloak and some pillows, that I may make him comfortable in his arm-chair. You are all anyhow. Pull your night-cap right down over your ears; there is nothing that gives people such bad colds as letting in the air through the ears.