"Только настоящий друг может терпеть слабости другого друга."
That would be, in English, a quote from the bard himself, good old William Shakespeare:
"Only a true friend can suffer weaknesses of a friend."
Quoted to Chris and me, in Russian, by our cocky little nine-year-old, after we reprimanded her for an unkind remark she had made about her sister. Evidently her being "a true friend" in addition to being a big sister somehow is grounds to let the snarky remark slide.
I must confess, Chris and I were so stunned to have Shakespeare swiftly quoted at us, in flawless Russian, that we were left speechless.
And Katya victoriously left the room while she could.