Wrinkles should merely indicate where the smiles have been. - Mark Twain

"The dog is a gentleman; I hope to go to his heaven not man's."

"Humor is mankind's greatest blessing."

"If you pick up a starving dog and make him prosperous he will not bite you. This is the principal difference between a dog and man."

"The two most important days in your life are the day you are born and the day you find out why."

"I was gratified to be able to answer promptly, and I did. I said I didn’t know."