More quotes by Mark Twain

"A successful book is not made of what is in it, but what is left out of it."
"Kindness is a language which the deaf can hear and the blind can see."
"When we remember we are all mad, the mysteries disappear and life stands explained."
"The dog is a gentleman; I hope to go to his heaven not man's."
"Humor must not professedly teach and it must not professedly preach, but it must do both if it would live forever."