A mere friend will agree with you, but a real friend will argue.
Fear the goat from the front, the horse from the rear and man from all sides.
Life is unbearable, but death is not so pleasant either.
Tell me your friends, and I'll tell you who you are.
There is no shame in not knowing the shame lies in not finding out.
You can not write in the chimney with charcoal.
Za dvumya zaitsami pogonish'sya, ne odnogo ne poimaesh'. (If you chase two rabbits, you will not catch either one.)
