Knowledge does, in fact, lead you to new oppertunites. When you learn, you may go down career paths that you did not even know interest you. Learning always has a positive affect on people. Even if you know something you didn't want to know, this information could help you later in life. The more you read, the more information you will be learning and this leads me back to Dr. Suess' quote. Whenever you read, you are learning, and whenever you are learning you are giving yourself a brighter future!
He helps her with her fear of monsters by going along with it. He calls it the Imaginary Demon. By making her fear seem like a "real" thing, it adds humor to it and makes it less frightening.
Mammals (Mammalia) are a class of vertebrate homeothermic amniotes (of "warm blood") that possess milk-producing mammary glands with which they feed the young. Most are viviparous (with the notable exception of the monotrematas: platypus and echidnas). A clear example of a mammal is man and his best friend, the dog.