“Physics extra credit: What should you do if you are stuck on frictionless ice? Assume you are nude and there is no atmospheric resistance. While correct, the answer 'suffocate' will not earn the credit.”
“...'Loving children is what teachers do for extra credit. It's not the main assignment.' 'Seems to me that the extra credit is more important than the main assignment,' observed Cordelia.”
“An extra effort will always bear an extra credit.”
“It's no use going the extra mile if people don't expect it. You will never get extra credit for it. Just invest it on something else.”
“Want more credit for all you do and who you are? Be the one who gives credit to others.”
“It is amazing what you can accomplish if you do not care who gets the credit.”