“You do not really understand something unless you can explain it to your grandmother.”
“Don't say that as a boy your grandmother used to read to you, unless at that stage of her life she really was a boy, in which case you have probably thrown away a better intro.”
“Nothing is really work unless you would rather be doing something else.”
“Do not be proud of the fact that your grandmother was shocked at something which your are accustomed to seeing or hearing without being shocked. ... It may be that your grandmother was an extremely lively and vital animal and that you are a paralytic.”
“How do you know you're whether or not you can do something, unless you try?”
“It's funny how you can think you know someone pretty well, and then something happens or they do something that makes you understand that you didn't really know them at all.”