What explanation is given by Gulliver to his coldness towards the farmer?

From the text:

"I made bold to tell her majesty, "that I owed no other obligation to my late master, than his not dashing out the brains of a poor harmless creature, found by chance in his fields: which obligation was amply recompensed, by the gain he had made in showing me through half the kingdom, and the price he had now sold me for. That the life I had since led was laborious enough to kill an animal of ten times my strength. That my health was much impaired, by the continual drudgery of entertaining the rabble every hour of the day; and that, if my master had not thought my life in danger, her majesty would not have got so cheap a bargain. But as I was out of all fear of being ill-treated under the protection of so great and good an empress, the ornament of naturem the darling od the world, the delight of her subjects, the phoenix of the creation, so I hoped my late master's apprehensions would appear to be groundless; for I already found my spirits revive by the influence of her most august presence."