“There is an old American saying 'He who lives in a glass house should not try to kill two birds with one stone.”

“Only a persuasive tone can kill two birds with one stone.”

“If you live in a glass house, don't be chucking stuff about. - Karl interprets the phrase Those who live in glass houses shouldn't throw stones.”

“People who live in a glass house have to answer the door - Karl invents his own phrase based on Those who live in glass houses shouldn't throw stones.”

“To shoot down a European is to kill two birds with one stone, to destroy an oppressor and the man he oppresses at the same time.”

“I am one of the sort that lives by throwing stones at other people's
glass houses, but I never mean to put up one for them to stone.”

“I could kill two birds if I wasn't so stoned.”

“192. Whose house is of glasse must not throw stones at another.”

“People who love in glass houses should pull down the blinds.”

“A tree does not try to be a koala bear. A dog does not try to be a bird. A stone does not pretend it is alive. Why should I pretend I am intelligent, or good-looking, or successful?”