“...thanks for good deeds do not amount to much except to prove one's politeness.”

“. . .It is the Law that while Evil, unopposed, may accomplish terrible deeds, the power of Good can never be overthrown when opposed to Evil. . .”

“That proves you are unusual," returned the Scarecrow; "and I am convinced that the only people worthy of consideration in this world are the unusual ones. For the common folks are like the leaves of a tree, and live and die unnoticed.”

“but one egg isn't good for anything at all”

“...it is always wise to do one's duty, however unpleasant that duty may seem to be." -Ozma”

“All the same,' said the Scarecrow, 'I shall ask for brains instead of a heart; for a fool would not know what to do with a heart if he had one.'I shall take the heart,' returned the Tin Woodman, 'for brains do not make one happy, and happiness is the best thing in the world.”

“I shall take the heart. [...] For brains do not make one happy, and happiness is the best thing in the world.”