This is proved by the episode of Dr.
Lind's visit during his fever.

Then and ever afterwards he expected monstrous treatment at his hands, although the elder gentleman was nothing worse than a muddle-headed squire.

It has more than once occurred to me that this fever may have been a turning point in his history, and that a delusion, engendered by delirium, may have fixed itself upon his mind, owing to some imperfection in the process of recovery.

But the theory is too speculative and unsupported by proof to be more than passingly alluded to.
At this time Shelley found it difficult to pay his lodgings and to buy food.

It is said that his sisters saved their pocket-money to support him: and we know that he paid them frequent visits at their school on Clapham Common.