“You are good for nothing unless you are clever.”
“do you think it isbetter to be clever than to be good?”“Good for what?” asked the Doctor. “You are good fornothing unless you are clever.”
“Nothing is miserable unless you think it so; and on the other hand, nothing brings happiness unless you are content with it.”
“Nothing will work unless you do.”
“Nothing is wrong unless you think it is.”
“It is history and as such it is good for teachings only, it cannot change the future unless you dwell on it, unless you let it.”