To 'know Thyself' is considered quite an accomplishment.

Oh, if Shakespeare says it, that's all right.

A curious thing about Ugu the Shoemaker was that he didn't suspect in the least that he was wicked. He wanted to be powerful and great, and he hoped to make himself master of all the Land of Oz that he might compel everyone in that fairy country to obey him, His ambition blinded him to the rights of others, and he imagined anyone else would act just as he did if anyone else happened to be as clever as himself.

No, indeed; I don't know anything. You see, I am stuffed, so I have no brains at all.

Never question the truth of what you fail to understand, for the world is filled with wonders.

Dorothy said nothing. Oz had not kept the promise he made her, but he had done his best. So she forgave him. As he said, he was a good man, even if he was a bad Wizard.

People would rather live in homes regardless of its grayness. There is no place like home.