The secret source of humor is not joy but sorrow; there is n... - Mark Twain

"I've had a lot of worries in my life, most of which never happened."

"One should never use exclamation points in writing. It is like laughing at your own joke."

"A successful book is not made of what is in it, but what is left out of it."

"Nothing exists but you. And you are but a thought."

"I did not attend his funeral, but I sent a nice letter saying I approved of it."