原谅我宠辱不惊孤苦伶仃
[yuán liàng wŏ chŏng rŭ bù jīng gū kŭ líng dīng]
'Forgive me, I am indifferent to both kindness and humiliation and left lonely all my life.' This conveys the sentiment of remaining calm regardless of favorable or adverse conditions in a slightly sorrowful way which may appeal to those who feel isolated but composed in their solitude.