知我者谓我心忧不知我者谓我何求
[zhī wŏ zhĕ wèi wŏ xīn yōu bù zhī wŏ zhĕ wèi wŏ hé qiú]
Based on an ancient Chinese text (from Shi Jing), this line means 'those who know me say I am worrying; those who don’t know what do they think of me?' ('知我者谓我心忧不知我者谓我何求'). It conveys frustration at misunderstanding and the feeling of loneliness in expressing thoughts.